@Mike Jacovelli while I'm sure that can be discouraging, it might also be a good thing...as long as what you are receiving in genuine concern...People tend to discourage you when they feel like it is protecting you, so maybe spin it around this way:
1) When they voice concerns about the information you're giving them, you can either dismiss it and change the subject (if they are being negative).
2) Do they have any specific concerns that you should actually consider as relevant? If you respect their opinion, hear them out...we learn from others!
3) Have you educated yourself to the point that you can explain it to others? Do you have enough information yourself? Sometimes, that's the problem...if you are unsure, they will be unsure! When you are able to explain your plan to others, and tell them why it will work that will be your turning point!
Remember that some people just want to argue with you, no matter the subject! Chin up, you've got this! Keep saving, learning and planning. Good luck!