If you seek a positive mind, you must expose yourself to positive information and hang around positive people. You will get whatever you want if you help enough people get whatever they want. Make every day as productive as the day before you go on vacation. People will try to rain on your parade because they have no parade of their own. Forgive and go forward.
Grudges block the positive.
Until you clear the past, you are destined to repeat it. The picture you have of yourself is what you will become. Spend 15 minutes a day focusing on a positive picture. What you do off the job determines what you are likely to do on the job. Reverse your weaknesses and strengthen your strengths at the same time.