I did an episode on frustration:
There are sayings that are repeated by relatives and friends like “you can’t do it” or “the idea won’t work”, but they are the same sentences that Amazon’s founder has heard a lot. So what if he stopped?
Trusting in the idea and the business is an integral part of its success. If you believe in the success of your idea, why let others stop you? But that doesn’t mean ignoring their advice because it may be a constructive criticism.
Some of the tips might change your vision, including trying to make the business work better.
However, keep in mind that everyone is looking at your current situation while you have to think about the future. Setting a clear, unchanged target is important, but advice may benefit you if it doesn’t affect your goals.