Not happy anymore

I don’t want to be married anymore and the worst part is my husband is a great guy. I don’t know what to do. My parents aren’t in a place to help me, I have no friends to talk to about it. And I most of all don’t want to hurt my husband. But I am 21 and feel like I need to live my life. I look forward to when he goes to work so I can just have me time. I don’t know what to do. If I could have some advice or just someone to talk to I would appreciate it