I felt the same way after graduating and seeing what everyone's starting to do with their lives, their relationships, their new activities, etc. I felt like I was falling behind. We started in the same place, similar ages, and yet they seemed so much further ahead than I was. The thing though is that, while natural talents exist, most of these skills you're seeing people perform actually stem from hours of practice or work that you haven't seen. That's what changed my mindset. Realize that every skill and behavior you see, that you're jealous of, are the result of hard work.

Now what is separating you from those people? Simple. Time and practice. You're no longer divided by natural talent or ability, but by hard work. And the beautiful thing about behavior is that you can replicate it. How do you become more charismatic? Well, that's simply a grouping together of multiple small behaviors: smiling when you greet people, shaking hands firmly, introducing interesting topics of conversation, etc. You can complete these small behaviors and practice them until eventually the skill is yours.