Mental Equilibrium: Perhaps the most important factor, we should never let ourselves develop an inferiority or superiority complex in our mind. Our mind should be unaltered by the surrounding environment. This can be better done by meditation.
Some Things Can’t Be Changed: We can’t force the Sun to rise in the West, we can’t wish to drink water through our eyes, so in life everything has a purpose, it’s upto us how we treat every object and situation.
People: If people start hating you, you should be aware that those “few” people are not required at all to achieve whatever you want to achieve in your life. Treat all others independently and take your time before judging anyone.
Respect your ideology and works: It is v.important to respect whatever you believe in, if you believe that sleeping at 3 in the night is good for you, don’t let others tell you when to sleep.
You should be confident on whatever work you have done in the past, doesn’t matter if it was a disaster or something to be proud of, it is very important for progress. Learn and respect your past, the future will welcome you with grace.
Time: Time is a mystery, I think time is eternity, it is the ultimate thing in the Universe, it’s upto you how you treat it but never take the time you have have ‘for granted’. Even if we had a time machine to use time as a currency, my advice would’ve been the same.