The only time that you can be happy is right now.
To have requirements pushes happiness into the future. Nothing in the future can happen. If the future can be said to exist at all, it does so only in our imaginations. If happiness is possible, and I know from experience that it is, it must be possible right now.
No matter what you are doing. No matter your job or partner or circumstances.
Open to the possibility of beauty in this moment and you will find happiness, full-throated and singing, smiling back at you.