Antidepressants, therapy, and self help.
Tar, carbon monoxide, nitrogen oxides, theyre harmful because they cling to the red cells in the blood and up to 15% of a smoker's blood may be carrying carbon monoxide round the body rather than oxygen.Smoking 'lower tar' cigarettes can increase the carbon monoxide levels as smokers inhale more deeply.Cigarette smoke has high levels of nitrogen oxide.
Hope that helps
People often give into negative peer perspire bc they want to be accepted. Often they will have the Fear of being ridiculed. They don't want to offend their friends so they do things they might not normally do. They may not know who to say "no". Hope that helps :D