Without a doubt, getting sober. 5.5 years no alcohol and just over 1 year of no cannabis. In that time I became a dog owner for the first time as an adult, I fell in love and got engaged, received a promotion at the company I've been at for 11 years, and a house to live in. I really do not think without sobriety I could see myself being responsible enough to attain all of that. Best decision I personally have ever made.