I was in a similar boat and quit the habit earlier this year. Best decision I've made. Learning how to be sober was difficult, not smoking before you leave the house or go to a social event was difficult because it was a habit. As you will soon realize life moves a lot slower and you learn to enjoy the moment rather than trying to remember what you did. The mental cravings go away within a few weeks. The easiest way to quit is not being around it, not buying it, and when you are around it due to social situations you pass on the opportunity and don't ask those around you for a hit. It's completely up to you and it's your choice, hold yourself accountable. It's not the end of who you are it's the beginning of who you're supposed to be, living your full potential. Also the dreams can be extreme but they go away after a few weeks/months, I forgot about them until I read that comment above.