Keep your mind on your objective, and persist until you succeed. Study, think, and plan.
Every great man, every successful man, no matter what the field of endeavor, has known the magic that lies in these words: every adversity has the seed of an equivalent or greater benefit.
Success is achieved and maintained by those who try and keep trying.
You are a product of your environment. So choose the environment that will best develop you toward your objective. Analyze your life in terms of its environment. Are the things around you helping you toward success - or are they holding you back?
When life hands you a lemon, squeeze it and make lemonade.
Everyone who achieves success in a great venture, solves each problem as they came to it. They helped themselves. And they were helped through powers known and unknown to them at the time they set out on their voyage. They keep going regardless of the obstacles they met.