These needs, consciously combined in the mind will effortlessly overcome procrastination. Consider the NLP technique which instructs you to question the motive of your desires, thus: "... If you had [thing desired], what would it give you that is even more important?" Peeling away layers of pseudo-desires leaves you with the Core Desire, thus activating your "Conquering Force" within, which will overcome any obstacle to its fulfillment.
Use these motivations in several ways to overcome procrastination. Remember Napolian Hill's discussion of Sex Transmutation in "Think and Grow Rich"? Encourage the presence of sexual desire in the mind while envisioning your intentions [kinda' like psychological bait and switch]. Do this several times a day without fail. Observe your day to day "surroundings" (events and conditions) without judgment and watch your desires swiftly come to pass.
Using core motivations in this way will not only overcome procrastination but do so effortlessly and joyfully.
1st - Physiological needs, such as hunger, thirst, sex and shelter are basic to ensuring survival. In addition, health of the body is an essential starting point to advancement - inadequate nutrition for example can cause profound psychological disturbance. Detoxification by such as breathing exercises, megavitamin therapy, colonic and fasting therapies may be valuable.
2nd - Safety and Security needs reflect our desire for stability, order and predictability in our lives and work, so we can place our attention on new ideas without distraction.
3rd - Need for Mastery, to have control over things and people, to know the rules, to lead; mastery through enthusiasm, going with the flow, and risk taking. And need for Acceptance, to give and receive love and affection, to have a partner, friends and to belong to organizations and gain colleagues' acceptance; need for support and acceptance.
4th - Need for Self-esteem, to build up our sense of personal worth through reputation, recognition, respect and self-confidence based on our achievements. Also the need for Self-acceptance on a realistic basis.
5th - Need for Self-actualization or fulfillment - our desire to develop to our full potential, to be creative, to feel we are contributing something worthwhile, to be one's true self, to know the truth, to feel ecstasy.
Lower needs usually have to be adequately fulfilled before higher needs become very important. Higher needs fulfilled, enhance our activity in the 'lower' areas.
Procrastination can't survive in the presence of these powerful and basic motives. Consciously associate each of these "needs" with your desires, and procrastination will no longer stand in your way.