I've had issues with depression and apathy, but, I'm only 20 years old. Philosophy has helped me through most of this. I know that it doesn't make a difference for a lot of people, but on the off-chance that it might spark a realization in you, here's how I see things:
There is nothing that you need to be doing. There's nothing that you're "supposed" to work towards. Whatever you choose to do in a singular moment is exactly what you should be doing. If you're doing nothing, there is still satisfaction in doing nothing, because nothing doesn't need to be something.
All of the anxiety and negative emotions we experience are the result of us tricking ourselves into thinking that we have some kind of trajectory or purpose in life. Like we're supposed to become some complete, developed version of ourselves at some point down the road, once we have a stable career and material goods. And if we don't achieve those, we think we've failed. But, in this moment, we're already the most complete, most developed versions of ourselves. Reality does not have a past or future, past and future are constructions and projections of the human mind - all that exists is this singular moment, being replaced by the next singular moment. There is nothing to fail at, because there is nothing we need to change about ourselves either "from" a past self or "toward" a future self because these do not exist.
In this way, you can do anything without failure and without success. You just, do things. They don't need a goal or a purpose, they are perfect actions within themselves. If you pick up a guitar and play for 30 seconds and then get bored and put it down, you have not failed at anything. You have just picked up a guitar and played for 30 seconds and then got bored and put it down and there are no positive or negative implications of that action. You had the expectation that you should have continued playing, or found interest in it, and this expectation is causing negative emotion. Without preconceived expectations, all actions, any actions, can become boundless and fulfilling in themselves.