of course you can do it. It always surprises me what us humans can stand and go through...if it wasn't for my depression and anxiety, I couldn't probably even imagine it.
The condition is NOT the identity. My position as regards that is really firm. Yes, depression is a part of you, your life. Yes, you need to accept the fact that you have that and others may not. Yes, you need to fight and overcome obstacles that others may not have to. But it's not who you are! It contributes to who you are, of course. But in my (strong) opinion, our reactions to the challenges and our strategies is what we really are.
I can understand and I do know from experience, that depression can consume you fully. But it does not become you. Making you believe that is just another one of it's nasty tricks. Symptoms. Your mind telling you other sad things is a trick too.
I believe you are a strong person, who can address the problem in several ways and I know you can do it. It's been done before. By many many people. Doesn't mean it won't ever come back once you feel better. It might. And you'll have to fight again. So it's important for you (for all of us) to accept that fact and develop strategies. One of them is not listening to depression talk.
There are other meds out there, there are pdocs and psychologists, many different types of therapy. That's the good news. What is bad is that the road to recovery is hellish sometimes. But we can do it.
So tell the depression, although it is a part of you, to go do something with itself. And stop telling you lies. You will be ok. You will be happy. But you need to be alieve, you need to accept your condition and decide to do your best.