Hmm...breakup advice?
1st: Under no circumstances attempt to contact your ex, UNLESS it's for practical purposes (i.e, all the logistics involved in one person moving out, splitting up shared property, etc.)
Always keep communication civil, even if they try to draw the conversation into the emotional side of things or start taking jabs.
Make it difficult for yourself to contact your ex, delete their contact, phone number, text threads, etc. If in the event you feel compelled to text or call your ex, text or call a friend instead. A support system in this time is crucial.
2nd: Keep yourself busy. Do anything and everything you can to occupy your mind and body. Clean, do yardwork, pull out the fucking fridge and do some deep cleaning, anything. Anything to keep your mind off the situation...Just stay busy.
3rd: Know that things will get better (as bleak as they seem).You are in complete control of your life and the direction it's going. No one, but you can affect it's path. No one, but you, is responsible for where you are now. Not a former lover, or girlfriend, or boyfriend. Things will get better.
4th: Grieve. Any person you love that's no longer in your life, whether it be through death, or divorce, or breakup, deserves a certain level of grief. Grieve your relationship and give yourself plenty of time to do so. Perhaps the worst part of losing someone you love in a relationship, is the fact that, in effect, you're in grief for someone still living, but who is lost to you. It bears no difference as to the effect though, the stages of grief still occur in the same order.
That's about all I can think of at the moment, I'm sorry you have that shit to deal with yessica. My relationship of 2 years just imploded this morning...shit is super hard. Stay strong.
I'll leave you with a poem that has brought me strength in dark times...
http://mwkworks.com/desiderata.html