You do need to have the dreams.
Realize that lack of belief is never what holds you back - it's that you haven't learnt how to want things.
No matter the consequences.
No matter people's judgements.
No matter if it's 'realistic'.
No matter your own insecurities.
No matter the circumstances.
No matter what.
Or suffer captive to a fake life.
They are too busy validating their beliefs about themselves and the world around them.
Suckers in life always put agency and power outside of themselves, and ask permission.
Why would you need permission to LIVE?