I've quit smoking three times in the last few years but the stress of school and work made me relapse. Starting to smoke again hasn't made me feel any less stressed and now I'm regretting it but I just can't seem to let go. It's taking a toll on my weight and exercising performance. I'm worried that quitting will cause my already high anxiety to overflow to an unbearable limit. Should I wait until I have a less stressful period to quit again or should I do it asap?