So a lazy, slovenly, untalented schmuck wouldn't think himself as such, and a schmuck I may truly be. Can't trust my thoughts.
Been there man. Our beliefs about ourselves have more impact on our lives than anything; who we say we are, what identities we assign ourselves, informs our entire lives. It's also easy to get hung up on the emotions of the moment, our day to day thoughts, and lose track of the big picture. One thing that's been helping me lately is to reconnect with my values, and live from there, live them. That allows me to move forward in the directions I've chosen regardless of the current circumstances and emotions of the day. Plus, although pharmaceuticals can be helpful in the right circumstances, we can't create the life of our dreams with chemicals, only the illusion of one. You didn't ask me for advice, but it may be good to get other sources of input beyond a medical doctor, who tend to be quick with the scrip pad when there's discontent.
So what are your values? What's most important to you? Which ones are more important than others? It's fun and productive to make a list and then prioritize it, with your most important value at the top, and then ask yourself: how would someone with these values in this order behave? What would they have to believe about themselves and the world? Also, what values do you have no use for, have no place in your life?
Are we much more than we're currently exhibiting sometimes? What if we haven't had our best days yet? Take care of you!