I believe being happy IS a matter of destiny.
Realistically speaking, life will always get in the way and there will always be situations that will test your patience and well-being, BUT as a Christian, I believe we are all destined to live an overcoming life.
And there is certainly joy and happiness in the hope of attaining that.
And you can choose to experience joy and peace despite your circumstances.
And nothing gives me that more than the relationship that I have with God.
It just something about the peace and calm God gives that doesn't compare to anything or anyone else in this world!
A few of my favorite Bible verses on experiencing happiness are:
“I leave you peace; my peace I give you. I do not give it to you as the world does. So don't let your hearts be troubled or afraid.” John 14:27
“Those who love your teachings will find true peace, and NOTHING will defeat them.” Psalm 119: 165
“'I will give peace, real peace, to those far and near, and I will heal them,' says the Lord. But evil people are like the angry sea, which cannot rest, whose waves toss up waste and mud. 'There is no peace for evil people,' says my God.” Isaiah 57:19-21