Here's a super simple process on how to do Concentration!
- Observe a subject or a thing.
- Observe your mind wandering (distractions).
- Shift your attention away from distractions (your thoughts and emotions) then shift your attention back to the subject or thing you're observing.
Here's a video for a simple yet in-depth discussion on Concentration by Leo Gura of Actualized.org:
Also another video on a simple layman's term on what Meditation really is:
I hope this helps in your journey.