Like a lot of the other escapists on here I have also suffered from clinical depression and they're right, if you're deeply concerned about it the best thing to do is tell someone. Truth be told I started off the same way you described but in that case it was food related so maybe a diet change is in order. Change to a lot of fruits and electrolytes. If it gets to the point where it's hard to get up in the morning (cliché but it was they biggest sign for me) then you need to tell someone immediately because it will start to go downhill fast. Best thing I can tell you from personal experience is find an outlet, something you can go all out with every time and stick with it, for me it was piano. Just remember, no matter how alone you truly feel you're not, you're never alone.
