setting up beliefs are ok. But if you have stuck because of them, if your growth has stopped because

you have set strong beliefs around a certain thing, then u have to rethink on your beliefs.

When you set your mind negatively about something, that this thing is not for me, then if that thing is meant to you,

no matter how badly you need it, it's not gonna be yours.

so every time you stuck around anything, think on it 2 3 times no matter how small or big the situation is.