It really comes down to realizing and making a conscious decision that you do not need these things.

Awareness is key. External sources of pleasure are ephemeral. No matter how much you have, you'll never have enough. A way to improve our relationship with substances and external pleasures are in admitting this truth. There is no sense in chasing something outside of us for it never brings us what we hope it will, especially for long. Recognizing this futility can lead us to want to change our behavior and mindset. But you have to start with a decision.