'I'm depressed' the western curse. 'I'm bored' is probably closer to the target. You are not depressed. You're bored, you've lost focus, maybe you've never had focus or direction or a goal. We are different to every specie on the planet. We've been gifted with this thing called a mind, it can either be our greatest asset or our greatest curse.
Now before you give me the 'but you don't know what its like' , I've been hurt, used, abused , all kinds of terrible shit. Did that make me depressed? No, at least not permanently. Even as a kid they were trying to label me it started as 'gifted' then as I squandered my slightly above average intelligence it became ADD, bipolar, manic. It was none of these things. I just had no direction.
So I went out into the world to be an 'adult'. Started with Mechanic, well at least that's what the piece of paper says, I still remember the sense of achievement of putting together an engine from scratch and then starting it (hopefully). And this is basically it , building , creating , repairing , a purpose, something to put your skills , mind and energy to.
Thats why they say once you retire you generally only live about 5 years. The soul knows there no reason to be around so the body, the mind they start to give up.
Many times in my life I remembered this soul crushing depression feeling, for no reason, the bills are paid (just), I had a job, maybe a partner, the sun is shining, but for some reason it just seemed hard to get out of bed, to think of reasons to keep on keeping on. In these periods in my life - the answer - taking massive action. Quit a job, move town, invested in something, signed up for some kind of fitness competition. SOMETHING that says this is what i'm gonna do , this is when I'm gonna do it and the how? Well that's the fun part. Figuring it out, finding away, making a way, creating, building (like I told you about the engine). Then before you know your so enthralled in the details of your latest adventure or en-devour, suddenly you're not depressed.
Does this make life any easier, hell no. I recall times how am I going to make x dollars to pay this, I need to leave the country in 3 days, I don't have the correct licence for this but its part of what I need to do... despite the stress and the challenge and none of it is life threatening (most of it) . You get that 'alive' feeling and the 'stress' of reaching achievement far out ways the 'pain' of sitting the couch on antidepressants and beer thinking 'whats it all for?'
Fitness, its the catalyst to change , a new life (see post 1)
Time to snap out of it.
-Side not, I am aware mental illness is a serious issue and people have chemical imbalances things like that. It's highly unlikely you are one of these people.