What I did was to take each moment at a time. Know that each moment is just a split second and something does shift in you. This helped me stop worrying so much and it also gave me the ability to appreciate life even at negative times. So when it is at it's worse, try thinking that the moment will pass and keep doing this whenever a moment weakens you.

Sometimes there are many, many negative moments together. But if you split them up, they become a little bit easier to deal with.