I am assuming you're talking generally. Generally, I rely on my faith for confidence. I know that as a human, I am flawed and will always be while I live. So relying on someone else or even myself can be setting myself up for failure. I have lots of things I could be depressed about if I focused on them. Instead I try to focus on the good things the I've been blessed with and be grateful for what I do have and what I can do. But I also pray for what I do not have and can not do. It can be difficult to be humble yet not complacent. I am certainly not the best at it. But I do have my God to lean on. Without Him nothing I do can lead to anything permanently meaningful.
I pray the Lord will lead you to where you need to be.