The reason you have to say "Trust me" is that you haven't earned it and are forced to ask for it - BAD MOVE.

Positive mental attitude is determined by you. Not others.

Ask for the sale when the mood is right. The worst possible place is in the prospects' office. Best place is a business breakfast, lunch or dinner. Next best is your office. Next best is a trade show. Ask early, and ask often.

Use your CRM to retain customers.

Loyalty is earned with friendliness, responsiveness, ease of doing business, fair value, and the good feeling customers get when they call you, visit you, or interact with you.

Mistakes in judgment are the best teachers in the world, and if you choose to learn from them then you will begin to trust yourself and understand that, correct or incorrect you were decisive and moved on.

People who are cocky and arrogant say, 'I know that' and move along. People who are confident and positive ask themselves,' How good am I at that?' and seek to improve