Ex smokers help please

DH and I have been ttc for awhile now. I do not drink, I maintain my healthy body weight, and eat a proper diet. My one down fall is I am a full time smoker. I attempted Chantix but had a severe headache. I have tried hypnotism. . That was also unsuccessful. I tried cold turkey but also failed. I feel like I am running out of options. I want to quit, I need to quit, but how? Please do not be rude. I just want to hear success stories that ex smokers have accomplish. So how did you quit?