This year, my (not so little) brother committed suicide in an alcohol induced stupor. He did it in his living room while his wife and young children were home, sleeping.

Therapy has been a life saver. The only true way to get "over" trauma or hardship is to get through. There is no getting "over" horrible things that happen to you. You just have to keep on moving forward, one foot in front of the other.

In the meantime, as other have said, find a passion or a hobby that you can pour some time into. Personally, I've found exercise, reading, spending time with my children (and his children), and practicing Stoicism to be very beneficial.

We look for clean lines of demarcation between life events a lot of times, but really, we can't extricate the future from the past so easily. All of us are, in some way, impacted by these critical, good or bad events. There is no escaping this impact; No human is immune to them. I've found the words of Marcus Aurelius to be particularly helpful:

"Here is a rule to remember in future, when anything tempts you to feel bitter: not 'This is misfortune,' but 'To bear this worthily is good fortune.'"

Good luck.