Short answer
No. You do not have to feel positive all the time. Human emotional life is mixed, and useful planning often requires noticing disappointment, fear, anger or uncertainty. The useful focus here is removing forced-positivity pressure. That keeps the answer close to what a person can actually observe instead of making the practice responsible for every event that follows.
A manifestation framework can be meaningful as a personal or spiritual belief, but stronger causal claims need stronger evidence. You do not have to settle the metaphysics before deciding whether a particular exercise improves a choice, plan or response. In this case, keep the practical question centred on removing forced-positivity pressure.
Start with the direct answer
The practical chain is usually internal practice → attention, interpretation, planning or behaviour → contact with the real situation. Each arrow can matter, but none guarantees the final outcome. Other people, constraints, timing, skill, chance and systems remain part of the picture. For this topic, a useful warning sign is suppressing legitimate emotion because it seems incompatible with the desired outcome.
That distinction is especially important for this question because suppressing legitimate emotion because it seems incompatible with the desired outcome. A useful method should reduce confusion, not require you to reinterpret every doubt or coincidence as evidence.
A concrete example
You can feel anxious about an interview and still prepare well, ask for support and perform competently. The example stays grounded because it names what the practice or thought can plausibly influence and leaves the outside result open.
When you can identify that nearby effect, you can test the method. When the explanation jumps directly from thought to an unrelated external event, be cautious about presenting the link as established fact. The nearby effect worth testing here is the one connected to removing forced-positivity pressure.
What to do instead of chasing certainty
Make room for the feeling, identify what information or support it points to and choose the next useful behaviour. This converts the question into something usable. It also gives you feedback that can change the next decision instead of requiring more ritual after every uncomfortable feeling.
Keep this experiment bounded: decide what you will do, what result you will watch and when you will review. For this question, the next usable move is straightforward: Make room for the feeling, identify what information or support it points to and choose the next useful behaviour. If that does not help, change or stop the practice rather than treating persistence as a belief test.
Watch for the main failure mode
The key risk here is suppressing legitimate emotion because it seems incompatible with the desired outcome. If that pattern is already happening, reduce the manifestation routine before adding anything else. A technique that creates pressure, avoidance or compulsive checking should not be defended simply because it is familiar.
Scepticism, mixed emotion and changing goals are compatible with this answer. The relevant standard is removing forced-positivity pressure; update the method when new information makes that standard easier or harder to meet.
A simple way to test this for yourself
Choose one real situation this week where removing forced-positivity pressure matters. Write the outcome, the part you control and the part you do not. Use a brief practice only if it has a clear job, then record what you actually did and what information came back.
At review time, ask whether your approach improved the decision or action linked to removing forced-positivity pressure. Do not widen the scorecard afterward to rescue the method from the specific risk of suppressing legitimate emotion because it seems incompatible with the desired outcome.
Put this answer into a decision rule
For removing forced-positivity pressure, write a one-line rule you can use when the question appears again. Base it on the real distinction in this article rather than on mood. The example above gives the pattern: You can feel anxious about an interview and still prepare well, ask for support and perform competently. Then decide what evidence would make you revise the rule. That keeps the practice responsive to new information instead of turning one answer into a permanent ritual.
A useful safeguard is to notice the specific failure mode here—suppressing legitimate emotion because it seems incompatible with the desired outcome—and decide in advance what you will do if it appears. Your response can stay simple: Make room for the feeling, identify what information or support it points to and choose the next useful behaviour. This gives the idea a behavioural endpoint. You are not trying to manufacture certainty; you are deciding how to act while some uncertainty remains.
Bottom line
No. You do not have to feel positive all the time. Human emotional life is mixed, and useful planning often requires noticing disappointment, fear, anger or uncertainty. Keep the focus on removing forced-positivity pressure, avoid suppressing legitimate emotion because it seems incompatible with the desired outcome, and use the next real action as the place where the practice meets evidence.