I have spent most of my life practicing one thing or the other. What attracts me about practicing in the sense of complete absorption that it brings. For a time, the absorption can be enough. Ultimately, though, the absorption should bring joy. I do not really think that it matters what it is that one is practicing as long as steady engagement brings a sense of inner peace and bliss that enables one to be kinder and to offer service in some way. I have quit some things along the way either because the practice did not bring enough joy or fulfillment or the practice was detrimental to my nature.
I know yoga and meditation are the right for me at this point in my life because sadhana (practice) continues to brings me ever increasing delight. I do not think of practice as work (though sometimes I need to use some self-discipline to remind myself to practice), but as an invitation to greater depth and understanding of not only the practice, but myself.
I have friends for whom the right practice is not yoga, but something else — a visual art, music, law. It is not what one does, but how one does it, and whether it brings a sense of fullness to life, a satisfaction with the engagement in the doing, rather than in what the doing achieves.