Hello i'm almost 18 i have been smoking for about 3 years now, although 2 cigarettes a day only. I have tried quitting about five times, the longest being two months without a cigarette, but the stress around me cannot let me quit. School test, exams, girl problems, home problems obstruct me from quitting. I don't know if my parents know that i smoke, they don't say anything about it. I only smoke at the end of school and before bed (go for a short walk) to relax and forget everything that happened. I do not do any drugs (this includes marijuana), i rarely go to parties or drink. What should I do?