So, there are lots of different kinds of happiness, from the complex happiness of doing the right thing to a more simple smiley feeling. So I wondered what kind of happiness you get from your faith?
I get a lot out of it.
1) I believe Christian theology, if rightfully understood gives you access to Truth in general. And by that, I mean that it not only talks about all the traditional stuff we think of concerning Salvation etc. but it also encompasses all the lesser "truths" as far as "self help", psychology and philosophy goes. So I believe their are some Biblical basis for some things that people find cool and helpful in not just other philosophy but sometimes even other religions as well, but what Christianity gives you in that case is a kind of Grand Unifying theory or in this case a Grand Unifying Theology.
2) Their is a lot of stuff in Greek Philosophy of Stoicism and Platonism about not investing your happiness in the things of the World that come and go, and this obviously has direct parallels with stuff Jesus and other figures have said in the Bible. The nice thing though, is sometimes you get some "hands on" ways of handling things like "not worrying" etc.
3) Likewise there are lots of helpful things in some of far eastern philosophies like Taoism and Zen about the importance of living in the moment, which likewise represent Biblical truth, and likewise you sometimes get helpful advise on handling the specifics of that kind of thing.
4) I actually think the Stoic emphasis on living rightly is especially helpful. In my own life, I have often despaired because I had failed, not accomplished what I sought etc. But the one thing we have really nearly in complete control is our own behavior, our own beliefs, and even what we choose to think moment by moment (if we are willing to exercise control of that). And with all these things comes some aspect of a legacy. We can find satisfaction in life if we have tried our best our best to live up to our ideals and values. And this sort of a belief, fits in really well with Christianity especially if you read Paul in the Epistles.
Besides this there are other things that give me joy and happiness
A) From Orthodoxy and ancient Christianity I believe there is a spirituality from things like Christian sacred art, and the beauty of worship.
B) After coming from the Charismatic movement and having my own mystical experiences of God, I believe that we can have a direct experience of God that is truly life changing, significant etc.
C) We also need to come to appreciate the nature of Jesus who "makes all things New", and will restore us or renew us in our proper time. If not in this life, in the life to come.