The Rosary was one of the first things I picked up, when I made the decision to convert. I realized that I needed to learn how to pray. I am, unfortunately, one of those people whose mind goes off in a million directions at once, holding entire conversations and arguments in my head, revolving around various subjects. All while doing my job or whatever I happen to be engaged in at the moment.
This, clearly, is not conducive to contemplation. I did not, in essence, know how to simply sit and be. So I decided to learn the rosary as a way to teach myself to sit and be quiet. Now, I pray it daily, at least once a day. I'm still working on the rest of the prayer life, actually "speaking" with God, but I say the rosary to get me into that headspace, where I can think, quietly, meditate on God. Does that mean I don't get distracted in the middle of it sometimes? Of course not. I interrupt myself with odd thoughts occasionally. And I just start that particular prayer again, pushing the thought to the side.