depression has ruined my life. advice?

I'm a third year math/cs student and I feel like my depression has ruined my life. I've dealt with it for almost my entire life and its given me major imposter syndrome which has led to me doing nothing with my life. I have no projects/internships, and everyday I feel so stressed about probably having no job after graduating. Recently I've even started to get physical symptoms from being so stressed out. I just feel really hopeless for the future and have no idea what to do anymore, its been effecting my motivation to study or do anything at all. I know it's my fault so I guess I'm just complaining about the consequences of my actions. Anyways if there's anyone else out there going through the same thing just know you're not alone ✊