"There is only one thing that makes a dream impossible to achieve; the fear of failure".

-Paulo Coelho.

There might be lots of different factors. People might even be conspiring to work against you in lots of different ways. If that’s the case, you may want to explore why they’re doing that and try to convince them otherwise. Or there might be time restraints and physics getting in the way. But the quote is about getting you to not give up and explore every opportunity to make your dream a success. There may be more than one path. You just have to find it and get over your fears before it stops you from calling yourself to action. And if you make mistakes, you need to go and fix them when you recognise them to increase your chance of success. If you can identify each thing before it happens, you can find a way to conquer it. And talking about it to others may give you a sense of what is required.