It's the nature of the mind to be busy. Try to focus on the meditation, but more importantly, don't be so hard on yourself when your mind wanders.
When I meditate I let and accept all mental distractions as they are part of developing one’s practise. Focus on hearing and feeling your breath. For deep focus I employ simple mantras. ‘I am that I am’
First i acknowledge that im getting distracted and remind myself that these are the reasons i always stay the same,that im meditating to bring a change. I SLOWLY BRING MY ATTENTION BACK TO MY THOUGHTS THAT IM FOCUSING ON AND I GIVE MYSELF CREDIT FOR NOT BEING DISTRACTED,THAT THIS TOO IS A SMALL STEP TOWARDS CHANGE.
I have found observing your thoughts and not reacting to them helps alot. Just let them be there, they will pass and when you dont react to them this makes meditating easier. Also try just focusing on your breath and anytime thoughts come in just let them be and go back to focusing on your breath. This has helped me tremendously.
I like to use an anchor of sorts. Maybe the sound of bells. Sometimes using my breathe also works as an anchor if I use a visual aid of my breathe circling in and out.