I have just recently started praying the rosary each day, or, trying to, and I can tell you with absolute certainty that it has had a very positive affect on my life.
I deal with a couple of addictions that I have been trying, with varying degrees of fervor and success, to overcome for years. I slip up frequently and begin to feel like it's pointless, and it takes me a long time to try again. Since I've started to pray the rosary, I slip up less frequently, and renew my convictions almost immediately. It has helped me make great strides towards living a good life.
In addition to this, when I am truly able to focus on the prayers there is a certain kind of peace or calmness that comes with it. It is a very comforting feeling, like all the troubles of life are... well.. not gone but... not important.... (even now, just thinking about it, I'm getting a taste of that feeling, a memory of it)
The benefits of tee rosary cannot be explained, they can only be experienced. I encourage you to trying saying it daily, or even weekly. Start small and work towards the best you can. I personally hope to eventually reach a point where I'm beginning and ending my day with the rosary, in addition to my other prayers, of course.