1. Cut out the toxic people. 

A house is worthless without a solid foundation. The people which you call your friends are largely the foundation for your confidence and social life. Sometimes, we recognize that these people are overall anchors on our psyche; condescending narcissists whose confidence rests on making others feel inadequate. The first step to building self-confidence is to get these people out of your life immediately. Once you solidify this foundation, you will soon realize how pitiful these people are, and growth you had been capable of without them.

2. Do you even lift?

Not only has my physical condition improved from going to the gym, so has my mental strength. As my physical form has improved, my confidence has risen. We have spent millions of years evolving to physically exert ourselves. Our modern lifestyle has left many of us without this crucial key to endorphins and proper brain chemistry; a factor which has promoted never before seen rates of depression and anxiety. Lifting weights have left me feeling better than I can remember, with endorphins and testosterone at an all-time high.

For years, I either avoided the gym or found excuses to stop. The reason I never committed to fitness was largely a lack of interest in self-betterment, but also a feeling of cluelessness in the subject. I recommend utilizing the "Beginner's Health and Fitness Guide" linked here. This guide breaks down fitness in an incredibly easy to understand way. This information is not published by someone trying to sell you something. It was written by input from numerous online fitness enthusiasts and refined for accuracy as well as simplicity. This guide has helped me and many others in online communities start down the road to improved physical and mental health through fitness.

3. Do as much as possible, even when you don't feel like it. 

I squandered years of my short life secluding myself to a comfort bubble. While in college, I have realized that happiness largely rests on occupying yourself with new and real experiences as frequently as possible. Time which would have previously been wasted on my phone, the television, or playing online games was shifted to trying new things. As often as possible, I have pushed myself to undertake activities such as learning to snowboard, grabbing food with people from college whom I had just met, going hiking with strangers and our mutual friend, traveling solo, etc. Pushing myself further from my comfort bubble every day has been exceptionally conducive to not only living life to a greater degree but also decreasing the anxieties which we all experience.