don't commit. Instead, leave yourself the option of quitting.
Leave the back door open.
Question your dedication to your goal (or your vision/direction) and indulge in doubt about whether it is possible, likely, or worth the effort.
Delay your decision to commit and spend an infinite amount of time exploring all of your options.
Don't commit to your vision, instead, "try" to reach your goal.
Avoid the fear of failure by not committing 100%.
That way if you don't reach your goal, you can say you didn't really try that hard and you can pretend you didn't really want the goal after all.
Sound familiar? I think we've all taken this approach before. It often leads to failure. Fortunately, there is a better way.
No More Trying - Only Doing!
Here's to your commitment, and success!