Telling him today

So I have been living separately from my husband for just over a month, I already went to see a lawyer just to get things started but I didn't tell him. I've told him I'm pretty sure I want a divorce but I wanted time to think about it, in reality I've wanted a divorce from the moment I walked out the door. I didn't tell him I was ready because I was trying not to hurt him a lot all at once but I can't take it anymore. He texts me or talks to me when I drop off/pick up our kid about getting back together and all the things he's trying to do to improve himself, I've told him over and over not to change for me and to focus on our kid. I want my freedom from him, I was isolated when we were together and I'm just getting a taste of freedom for the first time in 6 years. I don't love him anymore and I want to be on my own. I want to be able to go out when I want and visit my friends and family when I want. I want to be able to meet people and have fun. I'm just nervous about how he'll take it. I don't want to push him over the edge but I have to take care of me, I'm honestly the happiest I have been in a long time but I know it's going to kill him. He's so used to me taking care of everything, I don't know if he even knows how to pay bills or file taxes or even take care of himself. I've taken care of everything for 6 years laundry, cooking, cleaning, child care, paying bills, doctor appointments for the kid, vet appointments for the dogs, I've even been the primary worker and have had a career for five years while he worked when he wanted to. I am so ready to be on my own that I can't wait another day, any advice on how to approach the subject? Please help me so I don't hurt him anymore than nessecary!