People with a scarcity mentality think there is only so much in the world to go around. It's as if they see life as a pie. When another person gets a big piece, then they get less. Such people are always trying to get even, to pull others down to their level so they can get an equal or even bigger piece of the pie.
Stephen CoveySomeone once inquired of a Far Eastern Zen master, who had a great serenity and peace about him no matter what pressures he faced, "How do you maintain that serenity and peace?" He replied, "I never leave my place of meditation." He meditated early in the morning and for the rest of the day, he carried the peace of those moments with him in his mind and heart.
Stephen CoveyLook at the weaknesses of others with compassion, not accusation. It's not what they're not doing or should be doing that's the issue. The issue is your own chosen response to the situation and what you should be doing. If you start to think the problem is "out there," stop yourself. That thought is the problem.
Stephen Covey