Before you begin a thing, remind yourself that difficulties and delays quite impossible to foresee are ahead. If you could see them clearly, naturally you could do a great deal to get rid of them but you can't. You can only see one thing clearly and that is your goal. Form a mental vision of that and cling to it through thick and thin.
They who lack talent expect things to happen without effort. They ascribe failure to a lack of inspiration or ability, or to misfortune, rather than to insufficient application. At the core of every true talent there is an awareness of the difficulties inherent in any achievement, and the confidence that by persistence and patience something worthwhile will be realized. Thus talent is a species of vigor.
Our achievements speak for themselves. What we have to keep track of are our failures, discouragements and doubts. We tend to forget the past difficulties, the many false starts, and the painful groping. We see our past achievements as the end results of a clean forward thrust, and our present difficulties as signs of decline and decay.