Honestly, a large part of it comes down to looking at a) all the blessings I have in my life, b) the struggle that so many of my friends deal with on a daily basis, and c) the friends that I had that didn't survive.
I'm a disabled Veteran. Eight traumatic brain injuries (short term memory loss, cluster migraines that have seen me hospitalized multiple times per month because I couldn't see, loss of coordination, tremors), both rotator cuffs torn, torn AC joint, three ankle reconstructions (need to get the right one done again), both ACLs torn, left MCL torn, all three ligaments in the left ankle completely torn, two herniated disks, PTSD-induced insomnia and hypervigilance, etc. When I came back from my 2nd trip to Iraq I was met at the airfield with divorce papers, emptied bank accounts, a foreclosed house, a repossessed car, and $75K in credit card debt for a card I didn't even know about. I'm not listing all that to engender any sympathy, but to make a point as I say this: compared to some of my friends, I'm BLESSED and LUCKY and have NOTHING to complain about. Anytime I think about what I'm dealing with and start to feel sorry for myself, I think about my friends and realize it's nothing compared to their struggle.
My friend Todd is one of the most positive people I know. Marine Force Recon, hard charger by definition. He was blown up by an IED. He lost some internal organs, lost an arm and both legs. Todd now surfs, skydives, does Spartan Races, and is dating one of the most beautiful women (inside and out) I've ever known.
Speaking of Amanda, she was a model, beautiful, funny, active and outgoing. She got run over multiple times by different cars in separate accidents. They wanted to amputate her legs, but she wouldn't let them. She was told she'd never walk again. Only one of her legs really works now, and she has to walk with crutches, but she does Spartan Races, 5Ks, and is training for her first 10K. No matter what is going on with her, no matter how she's discriminated against and belittled, she's ALWAYS smiling.
My friend Mike was an Army Ranger. Blown up by an IED, he lost his whole team, both lower arms, and was burnt beyond recognition. He's the funniest guy I know, never stops laughing or cracking jokes, and there isn't a day that goes by that I don't see him posting something on my Facebook feed where I see him with some hot chick I didn't know he knew.
I'm not going to say it's easy, I'm not going to say each day is a cakewalk, but the fact of the matter is, if you keep the right attitude it WILL get better. Don't let ANYONE tell you what you can or can't do. Whether you say you can, or say you can't, you're gonna be right. Keep the positive attitude, count your blessings, and remember that, no matter how sh*tty it may be, someone else is probably dealing with worse.
Oh, and never stop laughing.