How to leave a relationship after 5 years and with a baby?

Ashley • Mommy of 3 Landon (3) Alec (1) and baby Autumn (4 months)
I just want out of my relationship.... im super unhappy, have not been able to live my life i want more and i want to show my 10 month old the happy me.... im to the point where i just stay in my room the whole day... everytime i see my boyfriend i just say mean things beacuse everything he does reminds me of how much i dislike him.... no he has never cheated or hurt me.... hes just not the type of guy for me. he doesnt care to make me feel special, he'll give something to the homeless before he gives to me ... the only problem is i have no family or friends to rely on if i needed them... basically i have no where to live if i leave.... im super terrified of the thought of being a single mother..... i want my son to have both his parents together... and happy.... what should i do? We've tried everything so we're to the point where we're just living day by day... its the end but how do i leave??