An excuse becomes an obstacle in your journey to success when it is made in place of your best effort or when it is used as the object of the blame.
Frustration, although quite painful at times, is a very positive and essential part of success.
Having a positive mental attitude is asking how something can be done rather than saying it can’t be done.
If you think Abraham Lincoln became famous for inventing the town car, it is time to spend a few hours on history.
If you have not taken the time to define what happiness means to you, what have your spent your whole life pursuing?