Keep away from people who try to belittle your ambitions. Small people always do that but the really great make you feel that you too can become great. When you are seeking to bring big plans to fruition it is important with whom you regularly associate. Hang out with friends who are like-minded and who are also designing purpose-filled lives. Similarly be that kind of a friend for your friends.
Sometime, somewhere you take something to be the truth. But if you cling to it too strongly, then even when the truth comes in person and knocks on your door, you will not open it.
Don't part with your illusions. When they are gone you may still exist, but you have ceased to live. To live a fulfilled life, we need to keep creating the "what is next", of our lives. Without dreams and goals there is no living, only merely existing, and that is not why we are here.
Clothes make the man. Naked people have little or no influence on society. You cannot depend on your eyes when your imagination is out of focus. As in the words of Wayne Dyer, when you change the way you look at things, the things you look at change. Sometimes to know with certainty that a particular thing is "true", will actually be the very thing that keeps you from attaining the things you seek to achieve.
When the mind goes beyond the thought of 'the me,' the experiencer, the observer, the thinker, then there is a possibility of a happiness that is incorruptible.
Habit is habit and not to be flung out of the window by any man, but coaxed downstairs a step at a time. You cannot eliminate habits that no longer serve you. You can only replace them with new habits that support your goals. Moment by moment, you need to live with awareness and structure the habits that you include or exclude in your days.
The man who doesn't read good books has no advantage over the man who can't read them. It is said that leaders are readers. However if they read trashy magazines for the majority of their time and they never run with the information that they glean from resourceful books, then they may as well have not taken any time to read at all. It is easier to stay out than get out.