There is no formula. Or roadmap.
Do whatever it takes to feel better. Stay in bed all day if You feel like it. Stay out all night if You want. If you can afford it, buy RIDICULOUS things just or the Hell of it.
Watch Your favorite movies. Listen to Your favorite music.
Allow Yourself to wallow every now and then. If You feel sorry for Yourself - go for it. It passes QUICKLY if You allow it to go through You.
What You resist persists. So feel any DAMNED thing You feel.
And KNOW that for all the good times, for the bonding and intimacy You felt...there is even MORE of that out there waiting for You.
The ONLY strength ANY of Us will EVER have is the the knowledge, the trust, the FAITH...that We will get up the next day and start all over again no matter WHAT. Ain't NOTHING stopping the next day from coming SO...ain't nothing stopping Us from starting over. As many times as it takes.
You will fall on Yer face a coupla times...and it will SUCK. But as long as Ya got a breath left You can get up. And You will.
And one day You will notice that the scales have tipped. You may not feel GREAT...but You WILL feel moar happy than You do sad...and then it just sorta keeps building.
Eventually You will see a future again...and when You get to THAT point...the sky is the limit!!!!!