Another way to succeed in life is to manage your time wisely and cut out any addictions from your life. Addictions are bad for many reasons but we often forget why addictions (of any kind) are bad in the first place.
Addictions are bad because they eat away at the time available to live. There are many far more productive things that could be accomplished with the little available time that you do have (like getting a college degree or starting a business). Also, many addictions cause havoc in the brain. If they don’t actually cause deterioration of gray matter they most certainly hijack centers in the brain as you become used to the dopamine rush. The brain/reward system responds by producing less dopamine. Since dopamine is the pleasure or thrill chemical and now you have less of it due to your addiction, you end up getting less pleasure in activities you previously enjoyed.
In many cases what starts out as a feel-good drug/high turns out to be a recipe for long-term depression, anxiety and lack of motivation. Now you have even less motivation to do things that you previously enjoyed simply because initially, these activities will probably produce less dopamine in your brain than the addiction that you are currently subdued by.
At this point you will have to entirely reprogram your brain and start a new cycle. This process is indeed very hard.