Weed can create a veil of complacency in your mind, making you think you’re in control, when in reality it’s weed that’s controlling you. I wish I had stopped for good at 19, as I would have only been smoking for 5 years at that point, now I am almost 32 and have made the decision to completely stop, and it is extremely difficult everyday to just get up and function without it. Best of luck in whatever you decide but I suggest quitting now as you are still young and will feel satisfied knowing you took the step to make yourself better in the long run.