Your feelings are irrelevant to others, do what needs to be done with a smile on your face.
It doesn't matter if other people think you can not do it because you know you can. Ignore their opinions; you're capable of doing anything.
You don't know everything. Own up to your mistakes as quickly as possible, as it's the fastest way for you to learn.
If you say you're going to do something, hold yourself accountable. Your reputation is the only thing you have, so be a person of your word.
You will never be able to demonstrate your value without intent. Your desires mean everything to you. Stop at nothing to attain them.
Your emotions cloud your judgement. People will look to you for guidance and leadership. Don't react, be decisive.
Most people drift through life. They have no purpose, no direction, and zero intent. Learn their needs and lead them.