You'll never meet a happy ungrateful person, or an unhappy grateful person because gratitude and happiness go together. Sometimes happiness precedes gratitude but often gratitude precedes happiness. The latter is achieved by realising things could be worse but aren't and so feeling relieved, grateful and happy.
Zig ZiglarThat's exactly the way parents develop positive, successful kids. Don't look for the flaws, warts, and blemishes. Look for the gold, not for the dirt; the good, not the bad. Look for the positive aspects of life. Like everything else, the more good qualities we look for in our children, the more good qualities we are going to find.
Zig Ziglar