I would first recommend a chiropractor. If you can't afford to see one, then a soft rubber ball rubbed against wall between neck/shoulder/back will help work out kinks. When you feel it hit the hard spot, push against it a little harder. Also pulling or pushing yourself through a doorway using your arms to hold yourself up may help. So if you are holding onto sides of door frame, let your body lean through it. Same thing backwards. Hope it helps.
Wife to my hero
& hero to 2 amazing little men.