The universe has ordained each one of us to achieve our full potential if only we would suppress our egos and allow our real selves to come to the fore. Realize that your dominating thoughts will affect your actions. However, life is mostly guesswork. You will usually guess more or less right, and sometimes you'll guess wrong. Demand of yourself the discipline of action.
Action is the key.
Not giant leaps but small consistent movement. Even if you feel as though everything you do turns to mud, there will be an end to this road you are currently traveling. However, don't be tempted to turn back. Think, visualize, fantasize and dream. Dare to dream a little.