There are more than enough people that are bitter, more than enough to tell you why something won't work or to be careful.
There are only a few that inspire you with genuine enthusiasm, even in a normal conversation.
More people than you think just need a little bit of a push. Give someone that gift.
Have a conversation and be genuinely enthusiastic. Enthusiastic to see them, to hear them, to support their ideas, to motivate them.
See what they can do when you set them free of their own self doubt