It's an irony- we all want to achieve our goals but we don't want to take action. Instead we just keep procrastinating giving ourselves more time to doubt.
"You want something, go get it period."
Why make things complicated when we know how simple it is. We know what we have to do, but we don't act upon it.
Why?
Consider this: While watching a movie, we get inspired by the actor's amazing six pack abs and body, we say to ourselves, "I am going on a diet from tomorrow and I will go to the gym regularly." Next day what happens, we either forget about it or we find some excuses.
This happens because we were inspired but not motivated. There is quite a difference between the two. Inspiration is a feeling usually gained from external sources, it's a feeling of excitement and a let’s do it now attitude. Inspiration leads to motivation. Where as Motivation is a push from within to take action after being inspired.