When we make prayer a habit, we can be happy when facing any situation or circumstance that comes our way. This is not to say we should be happy about going through unfortunate times in life, but we can be happy because of the Lord and knowing He will bring us out of whatever we are going though.
Worrying means one is either consumed with unpleasant thoughts of the past or future. Most things we worry about never happen. Just for a moment, think back to something that worried you. Whatever worried you, did it happen? Chances are the situation turned out better than you expected or hoped.
Getting the mind off of the present is a trick of the enemy. Satan wants us to lose focus of where we are and to lose faith in the Lord.
Make prayer a part of your daily life. When you feel yourself starting to dwell on not so good things, start praying instead. Think on what God's Word says about your situation and meditate on His Word. Prayer every day keeps worry away.
"Therefore do not worry about tomorrow, for tomorrow will worry about its own things. Sufficient for the day is its own trouble." Matthew 6:34