Introspection is the trick. Understand what you want, why you want it and what it will do for you. This is a critical factor, and as such, is probably the most difficult step. For this reason, most people never complete this aspect – then wonder why life is so difficult!
The best way is to develop and follow a plan. Start with your goals in mind and then work backwards to develop the plan. What steps are required to get you to the goals? Make the plan as detailed as possible. Try to visualize and then plan for, every possible setback. Commit the plan to paper and then keep it with you at all times. Review it regularly and ensure that every step takes you closer to your Vision and Goals. If the plan doesn’t support the vision then change it!