If encouraged, it cuts a channel into which all other thoughts are drained. Every tomorrow has two handles. We can take hold of it by the handle of anxiety or by the handle of faith. Apply discipline to your thoughts when they become anxious over the outcome of a goal.
Impatience breeds anxiety, fear, discouragement and failure.
Patience creates confidence, decisiveness and a rational outlook, which eventually leads to success. Each is generously peppered with quotes. This is the main PPR site. Covers much more than gardening.