“One can choose to go back toward safety or forward toward growth.”
A baby bird in the nest appears safe, but until it risks and flies it is actually the most vulnerable.
You could always quit and go back to the perceived safety of your old life, but that would be like the Israelites griping in the desert about how good they had it as slaves in Egypt and contemplating returning to the life they knew instead of the uncertainty and hardships required to eventually reach The Promised Land.
Go forward. Even if the way is difficult.
Go forward, even if you are afraid to be emotionally rejected while building the relationship.
Push towards growth, even with the failures along the way. That is normal in lifting weights or building an Introduction Based Business (or any business).
Choose to go forth, because behind you is a life you left for a reason.