1. Temper takes you to trouble, Pride keeps you there.
2. Do not wait; the time will never be 'just right'. Start where you stand, and work with whatever tools you may have at your command, and better tools will be found as you go along.
3. Imagine that you are funded by the Universe, because you are.
Chinmayananda's aphorisms are pithy. Here he points out that sometimes we not only make a mistake but follow it up with a bigger mistake of not correcting. This is what I like to call "stuckness thinking" either due to ego or false pride. The solution is to pause, shake ourselves figuratively and move on.
Hill is an old proponent of positive thinking who wrote famous books such as Think And Grow Rich. The above statement is crisply brought out by the enduring tagline of Nike: Just Do It.
The third quote is a bit abstract but profound. Could be interpreted at multiple levels.