Procrastination is the fear of the unknown factor which keeps us disengaged in what we are supposed to do on a priority basis. This restless mind always wants us to be safe from danger and to protect us from any eventuality. 
The mind is programmed only to protect us from dangers and avoid accidents and embarrassment from others. 
So it will never let you try new jobs or tasks and keeps you under the surveillance of not doing or postponing for its convenience and safety
The more we follow our restless minds and never try out new tasks or jobs, we invariably have to remain in our comfort zone with mediocrity and compromised lifestyles. 
  So, the moment we start acting with conviction and determination to achieve our goals and ambitions with steadfast focus and concentration, the restless mind cannot act against us but has to obey our concerns and act with commitment. 
 So stop procrastinating and start to achieve your goals and ambitions for a successful life to greatness.