Just split with my partner after 4 years.

I'm 20 and have a 13 month old son with my ex partner of 4 years, my partner used to be so controlling and stripped away every part of me, how I dressed, talked, went out with friends, spoke to people, worked everything. I finally got the courage to leave him, except I still feel stripped from my own identity, i dont know my style, I feel I don't know what type of person I am. I feel I'm going to be on my own for a very long time and I'm worried, how did you mum's deal with loneliness after separating? How long did it take to feel happier within yourself?