Feel like the entire Ocean is over your head and drowning? Just wait a bit. Even the tides fall to the moon.
Talk to someone. But just as important, don't give up. There's very few things you can get yourself into that you can't work your way out of.
I'm thinking of particularly recent cases like poor Ilya Zhitomirskiy.
Don't give up, don't give in, you are stronger and bigger than the emptiness you feel inside of your heart right now.