While striving to excel is a good thing, you have to remember to not run over other people along the way. You never know how your assistance toward an other's goal could positively impact the world. Do not become so self focused that you fail to see where you can help another person to reach their goals.
Often people are dedicated to their own their tasks that they lose sight of those around them. These people don't necessarily mean to harm or neglect others on purpose, but their dedication to success makes them think that people are a nuance.
But it is hard when under pressure to remember to be observant of the needs of others. I have figured out that those who are truly successful, be it financially, emotionally or spiritually are never jealous. Instead these are the people who go out of their way to lend a hand up to those who are still climbing the latter. Successful people are confident in themselves and are never threatened by the achievements of the next guy.
Have A Great Day.