Obstacle #1: lack of discipline. One plans to start tomorrow, next week or next month, not realizing that the journey of a thousand miles begins with that all important first step.
Obstacle #2: Not realizing that all there is, is right here, right now! Which is when the first step must be made.
Obstacle #3: Not realizing that all things of value must be fought for or worked for; to get them or to keep them.
Obstacle #4: You tell me. Do you really want it?