Cant get over it. Asking advice

So in the last 6 months 5 baby's have been born around me and another friend just found out she was pregnant. Hubby and I have been trying for around 9 years give or take, to conceive with no luck. There are a few things going against us, weight, pcos, metabolic disorder blahdy blahdy blah...I, well we have both made really big lifestlye changes. Drs keep saying reach this goal, OK now this one so on and so forth. Still nothing. I am literally starting to come undone. I just cannot get this mood to pass. Any advice?