Life is unfair. It's completely random. Most of all, life is meaningless. What is the point of it? You live, you die. What's the point of working hard in life - it means nothing.
Do what you love - enjoy life. What other reason could there possibly be for life existing other than to enjoy it? Do everything, take risks. Life is so meaningless and short-term that what does it matter what you do in it? Do what you can to make a difference or change something or be remembered, otherwise your life will end and it will really have meant nothing. Do what you love and remember that life has no purpose. The world will end one day and so will life, so make the most of it now and try and help make life as happy for everyone as you can.
Life means nothing. It ends having not changed anything. Love life, but don't worry about things because sooner or later you die and it will mean nothing.