One of the biggest mistakes people make is judging opportunities by their current size. Not everything valuable looks valuable in the beginning.
Some opportunities start as extra work, a learning experience, a difficult challenge or something that doesn't immediately pay off.
The future is often built from things that seemed ordinary at the time. Pay attention to what has potential not just what has attention.
Being respected for your boundaries is often better than being liked for having none. You don't have to agree with everyone, please everyone or carry everyone's expectations.
Sometimes growth means becoming comfortable with disappointing people who benefited from your lack of limits.
Not every no makes you difficult. Sometimes it just means you value your time and energy.