Most people have a vision at some stage in their lives. Discussing this vision with your closest friends may not be the best advice that I can give you.
When God gives you a vision, it is meant to lift you up so that you can fulfill your destiny and do something that you enjoy doing. Your family and friends do not have the same vision and this can lead to a dispute and a dashing of your enthusiasm destroying your God given vision. It is very hard to stay focussed when other people start to sow doubt into your path.
At that point it is time to get away from these people as soon as possible to retain your sanity and your vision.
Stay focussed and do it anyway, the best thing to do is have success and prove them all wrong. Your best outcome is for you to be doing something that you enjoy doing, being happy and successful.
It is your journey after all and not theirs. Hold your vision close to your heart and step out of your comfort zone and plan to succeed. If you do this, you will accomplish your Vision in the shortest possible time.
Watch those that criticize you and it is easy where they are in the game of live, love or perish.