There will always be doubters. It could be people you know really well, people who you meet or people who you work with every day. People who give you that look that doesn’t quite go with their words of encouragement.
This is often the first test of the goal setting process. It is a goal test that requires you to question your ability and belief that you can achieve it. This personal test is to see if you are really serious about that goal. If you are you will pursue it and if you’re not you will give up before you actually start.
Even if people are not 100% behind you, know in your heart of hearts that success is a great come back. The argument is over when the result is achieved, the questions are answered and the critics are silenced, even if they are only in your own mind.