bipolar 2 lol yeah man don't smoke you're raising your risk for no reason and it's easy to get into a habit or doing it all the time. Another huge factor is stress and trauma and interpersonal conflict etc... avoid bad relationships and bad people who don't treat you well and high stress. I started off in your position, saying I'm not going to smoke because I worry about the mental health impact, ended up normalizing it and doing it all the time and developed something. I've been in your shoes. It was also stress, my environment, trauma. Try to have an easy going low stress life with good people, good environment. educate yourself on risk factors and lower or avoid them. If you meet a shitty person avoid them, if work is taking a huge toll on you change it. Do what's good for you. Your dad has probably been through a lot of things in life. Its a hard thing to deal with. Still figuring it out myself.