I shouldn’t feel this way

I shouldn’t be depressed, there isn’t anything I should be depressed about. Yet, I’m always tired, I’m emotionless most of the day, and my eating habits get worse everyday. I thought I was done feeling this way years ago. I thought it was just a phase but it turns out I’ve just been in denial. I have a great paying job (not that i particularly like), I’m told I’m a good son because I stepped up as the man of the house since my Stepfather walked out on my mother and my sister. I just don’t feel the same way about myself. Like no matter what I do, It’ll never be enough. I’ll be 25 this year. I know thats still young but, I feel like I should be doing more with my life. I find myself wishing I had done more in my teen years. The future scares me, I guess thats anxiety? I feel like outside my immediate family, I’m just a fill-in character. I exist but, my importance is little to none.