Sleep training

How did everyone who sleep trained do it? My almost 9 month old is still waking up about 5 times a night and I’m losing my mind. He mainly just wants to be held for a little and then put back to sleep but I really feel like not sleeping has taken 3 years off of my life.

I tried letting him cry it out for 30 minutes last night and he just kept crying and then wouldn’t go back to sleep after.

Please tell me this will pass