PS: I know the 30-year-olds in the audience will laugh at me for feeling "old", but I imagine that applies to every stage in life. When I was 21, I certainly didn't expect I'd suddenly encounter this overwhelming fear of getting older around my mid-twenties.
I have read often that in academic settings, many people make their biggest research contributions in their mid- to late twenties. That's where you're at, you seem to know what is important to you, you are working hard; it sounds to me like you are doing all the right things. If you spend less time looking at the facades of other people's success, you'll be fine. And facades is what they are.
As for the procrastination, an unexpected learning for me recently was the insight that I really need to start my day with a clear head, free of distractions. No email, no hackernews, no twitter. Sit down and get straight to work, get in the flow, do a few hours of really good work. Protect this time, eliminate all sources of interruption. I would guess I produce 2/3 of my work output in the first 1/3 of my work day, which makes me feel happy and relaxed for the rest of the day. Recommended reading: "Daily Rituals, how Artists Work", by Mason Curry.
Finally, don't forget that you are only young once. Party, do crazy and stupid things, that's your privilege. You can always work more (and get rich/famous) later in life. You'll just replace youthful energy with experience.
