I have a motto on my bedroom wall: 'Obstacles are what you see when you take your eye off the goal.' Giving up is not my style. I just want to do something that's worthwhile.
This job certainly doesn't win you a huge amount of friends, I accept that, but it is very enjoyable, and deep down I think it's probably quite a worthwhile job.
I want to add something worthwhile rather than just chucking loads of stuff into the world. I don't want to feel responsible for adding to the soup of mediocrity.
Not only will this make you treat each moment more preciously, but you will be more patient with yourself and with others, recognizing that there are millions of moments on the path to any worthwhile achievement.
Almost everything worthwhile carries with it some sort of risk, whether it's starting a new business, whether it's leaving home, whether it's getting married, or whether it's flying in space.
Being an astronaut is a wonderful career. I feel very privileged. But what I really hope for young people is that they find a career they're passionate about, something that's challenging and worthwhile.
What you want in a mentor is someone who truly cares for you and who will look after your interests and not just their own. When you do come across the right person to mentor you, start by showing them that the time they spend with you is worthwhile.
Even a mistake may turn out to be the one thing necessary to a worthwhile achievement.
Love may not make the world go round, but I must admit that it makes the ride worthwhile.
Adventure is worthwhile.