How does one develop a good attitude? The same way one develops any other skill; through practice!
One good way is to stick a small sign on the bathroom mirror that says “Attitude!” That way, you’ll see it first thing every morning. You might have another one in your car, or one at your place at work, or as a background on your cell phone or computer.
We need to smile more, speak to people, reach out to people. Everything in the world we want to do or get done, we must do with and through people. Every dollar we will ever earn must come from people. Everything worthwhile in our lives comes from people.