It's important to have some clear ideas on what you'd like to do and what you don't. You might be too familiar with these ideas that when someone asks you why you'd like to keep doing it, you don't seem to be able to explain it in a way that's so logical and so comprehensive to win others. Well, then they may use that opportunity to challenge you, to upset you and be a downer to you.
It's good to be open to suggestions, but it's also crucial to hold your ground. If you're doing something that others do not care enough to take the time to fully understand you, it probably means that you don't need to care about their opinions.
You may continue to do what you do and fail, and people may laugh at you, but those who act are more courageous than those who gossip.
Try to stay away from those who don't take time to understand you, and communicate your ideas to those who do. Yea, you may still fail by doing what you do, but communicating your stories to those who care can be a great encouragement to help you find a better way.