The only way to be happy is to be fully involved in the Great Commission. This is not doing works to substitute for faith; this is doing works by faith - having your heart so full of God that you seek to fill others, being on this grind daily... getting the strength that you need, so you can be a blessing. God told Israel, "You have planted much but harvested little. You eat but never have enough to be satisfied. You drink but never have enough to become drunk. You put on clothes but never have enough to get warm... You expected much, but then it amounted to little. When you brought the harvest to your house, I ruined it. Why?', says the LORD of Hosts. 'Because My house still lies in ruins, while each of you is busy with his own house [Haggai 1].'" This is the declaration of the Lord of Hosts, and He will not budge! He will not give joy and peace to ANYTHING ELSE but doing His will from the heart - because we are forgiven, so we go out to save others.
It doesn't matter if your job is a housewife or a single woman... if you are an evangelist or a mortician! The only thing that matters is a life spent serving Him by bringing others to Christ with whatever gifts you have. Try all you want to do something else: The only way it'll make you happy, is if you have a seared conscience ready for hell [Eph 4:19]. Try to find it in your spouse or children, in your job or hobbies, and you only waste your time. It is in ONE PLACE ONLY - the will of the Lord Jesus Christ, living to make Him known because He's made great mercy and grace known to you.
Taste and see that the Lord is good. Do this: walk uprightly by getting His joy into your heart, every day, so that others can rejoice and be saved.