Management manages by making decisions and by seeing that those decisions are implemented.
The highest art of professional management requires the literal ability to 'smell' a 'real fact' from all others.
I think it is an immutable law in business that words are words, explanations are explanations, promises are promises, but only performance is reality
The best way to sell yourself to others is first to sell the others to yourself. Check yourself against this list of obstacles to a pleasing personality: interrupting others; sarcasm; vanity; being a poor listener; insincere flattery; finding fault; challenging others without good cause; giving unsolicited advice; complaining; attitude of superiority; envy of others' success; poor posture and dress.
In the business world, everyone is paid in two coins: cash and experience. Take the experience first; the cash will come later.