It's easy to think happy thoughts when we are feeling good, not so much when we aren't. That is why it is important to develop a practice or something that will help to carry us through until we are feeling better.
One of my favorite quotes from Abraham Hicks is "You never get it done and you can't get it wrong."
No matter what is happening, life is always changing.
I used to think that I had to work hard to eliminate unwanted things from my life. What I am learning is that it is much easier to simply replace them with something, anything, that feels just a little bit better.
It doesn't take much to change the direction of your life, just consistently pay attention to how you feel and do more of anything that feels good.
Something as simple as a casual walk can produce more positive results than furiously trying to get something done.
Be kind to yourself!