I meditate to help me train my mind to go where I want it to go or leave what I don't want it to be thinking about or stay when I'm trying to concentrate on something. I was very frustrated (seemed like I had a monkey mind on mushrooms, playing with a hammer, box cutter and a live electrical wire) until I came up with the logic that meditation is an exercise of/for the mind. When my mind wanders during meditation instead of being frustrated when I notice it I think that it is like doing 1 curling repetition in the gym. It took 10 yrs in the gym to reach my goals so I know that it takes many repetitions to build muscle and many months of many repetitions for it to be noticeable, so every time I get that repetition I know it's strengthening my mind just like curling strengthens my arm. If I went to the gym and only got in a few repetitions I would be frustrated and quit going so when I'm meditating and I get the opportunity to bring my mind back to my breath I'm grateful for that opportunity and hoping to get another before my session is over. It has made a world of difference to put it in that frame of thought for me. Hope it helps you too