Psychology is extremely important in any business. The mindset you have as leaders or salespeople is absolutely critical to your success or failure.
You will succeed if you believe you can. If you are willing to persevere until you succeed.
If you consider no's to be stepping stones to the next yes.
The psychology of success is when you see everything around you as conspiring to either help you succeed or make you stronger so that you can succeed in the future.
Begin with psychology.
Once the psychology is in place, remember that psychology is an ongoing process.
You must continue to work on it. It's similar to going to the gym.
You don't go to the gym once and expect to be physically fit for the rest of your life.