Communication is the (GPS) for relationships and marriages. You have to (tell) someone what is bothering you. You're either growing together or growing apart.
If it's not worth asking for then it's not worth having!
Depressed people have a way of shutting the world out and then they convince themselves that no one understands them or they are all "alone".
Another thing people tend to forget is: "You are responsible for your own happiness!" Each of us (chooses) our own friends, lovers, and spouse. Our lives are for the most part the end result of the choices (we) made along the way. If you are unhappy with your choices you can learn to make better choices for yourself.
If you want something different (you) have to do something different!
When we change our circumstances change. The only cure I have found for depression is taking action. Even if you do as Susana S suggest by writing some things down. That's a start.
There are only two ways to experience joy and peace of mind in relationships: we either get what we want or we learn to be happy with what we have. The beautiful thing about a door is it lets those who want in (in) and those who want out (out).
Tomorrow is not going to be any different from today unless you do something different today. It's your life! Take the wheel!
Best of luck!