Accuracy results from taking pains to be right.
Punctuality is a habit of mind that anyone can develop.
Memory is acquired by practice in remembering things.
You use some imagination every day—use all your imaginative power.
Likewise you occasionally concentrate your thoughts. More exercise in concentration will develop this mental characteristic.
You adapt yourself to circumstances when necessary, or when you choose. You can train yourself so that you will be prepared to meet anything that may happen.
You have a degree of stability of character, otherwise you never would accomplish anything. Increase your steadfastness by sticking to more purposes.
Similarly determination, self-control, tact, diplomacy, and good judgment are merely the natural results of continual practice to develop these mental qualities.
Emotional Qualities
The principal emotional or heart qualities required in masterly selling are ambition, hopefulness, optimism, enthusiasm, cheerfulness, self-confidence, courage, persistence, patience, earnestness, sympathy, frankness, expressiveness, humor, loyalty, and love of others. Think of these one by one, and realize how many of them you already possess to a considerable degree.