Try this today: Set a reminder alarm on your phone to go off every 30 minutes. Then, throughout the day, whenever the alarm goes off, check in with yourself. Ask yourself "Was the stuff I was doing, thinking about or feeling in the last 5 minutes helping me to PROGRESS in life and as a person, or was it keeping me where I am?". And then simply adjust your thoughts and actions accordingly.

Develop the HABIT of letting go of unproductive thoughts, feelings and ...habits! It's without doubt the FASTEST way to grow, and build a life you're happy about living. Faster than reading books about it, faster than watching videos on youtube about it, and faster than constantly attempting to sate or distract yourself from your dissatisfaction by chasing short term "quick fixes" like smoking a cigarette or buying the new iphone.