Being grateful is a habit. Every morning I wake up seeking to be thankful. When I encounter negative thoughts, I turn to thankful thoughts. Being thankful is easy and difficult all at once. But choose it. Chase it. Turn to it when it doesn't feel good. Thankfulness leads to worship. Hebrews 12:28 says, "Therefore let us be grateful for receiving a kingdom that cannot be shaken, and thus let us offer to God acceptable worship, with reverence and awe. . ." Worship springs forth from thankfulness. Five minutes of thinking about that kingdom, his promises and the goodness he has poured into your life and you'll be worshiping and praising God.