It's funny how a person changes. I always thought 20s was my best time. It sort of was. Generally, that was the moment you are energetic, can burn as much as you can, naively think that life, relationship can last forever. Also, you unconditionally trust other people.
Things will turn when you are 30s, you start to realize your skill, your prowess to growth has a limit. In exchange, you grow wiser. In my case, I found my reads on people are much better, I start to go behind other people's word and try to understand people's intention. I start to treasure genuine friendship, protest contrived politeness and faked honesty.
I also start to know when is the best time to be quiet and when is the best time to give a come back. The former is important because if you are the only one who shine, your team will perpetually has the capability of one person, who is you.
The latter is also important because if you are always quiet, there are just people who will step on your toes harder and harder. They will think you are weak and can be bullied. In real life, as in the time when you are in high-school, the bullies love to bully the weak. Making sure they have a hard time to do so, is a very important life skill.
I will never go back to the time I can hack a program for 20 hours, sleep, and then hack it again for another 20 hours. Will I feel regret about it? Probably not, in exchange, I learn that sometimes you can solve a 20-hour problem with 2 hour, you can still sleep and make a living. For all that matter, it seems to be a better deal. 🙂
The Grand Janitor