What you WILL find is that you have the right to pursue happiness. That's different now, isn't it? We really have to get this right, or else a lot of people are going to be miserable, more than they already are.
While we're at it, happiness comes from "happening" and doesn't last very long. You're going to do a lot better by pursuing joy, eternal joy:
Romans 14:17 nkj
for the kingdom of God is not eating and drinking, but righteousness and peace and joy in the Holy Spirit.
22 But the fruit of the Spirit is love, joy, peace, longsuffering, kindness, goodness, faithfulness, 23 gentleness, self-control. Against such there is no law.
Joy, eternal joy, has some great companions here, because it's the fruit of the Spirit, not the fruitS. :)