Can people share tips on staying (relatively) happy while being closeted?

I’m not ashamed of who I am, but I believe everything will go a lot smoother if I wait 2 years (finishing college at a tiny school) so that i can be around less hateful people. I know that i’m not going to be able to be completely happy because I cannot express myself freely but I would love some tips.

MTF btw if that matters.

Thank You!