get the headspace app, it's brilliant. I used the free trial then a black friday deal for a years subscription. NY resolution was to do it every day and as someone that is inside their head a lot and very analytical I could feel a difference after 10 days and felt more present.
I had some health issues at the weekend that have been a constant worry so haven't done any since, but I highly recommend the app
And the best way to understand meditation is like "bicep curls for your brain", every time your mind wonders and you have to snap focus back to your breathing IS hard/tiring but necessary