Yes, concentrate on your breathing and try not to get 'caught up'in the thoughts... They will arrive one after another, but try and just let them be, don't get caught up into giving them attention . It does seem a bit odd at first - because we have so many ! But as time goes by they are easier to 'let go' of and we get to feel the space between ... Which can be very restful and healing.
If you think about it (oops!) we start thinking when we wake up and then just carry on in an endless way until we drop off to sleep.... A rest from that is good - like a little mental holiday...
If you get fed up - try mindfulness instead - just sit quietly (somewhere outdoors/peaceful) is good. Then close your eyes and just use one sense at a time. So maybe listen exclusively what exactly can you hear - don't pay any attention to anything else other than listening, bird song, traffic, voices, rustling trees, a clock ticking.. Then repeat with your sense of smell, then your sense of touch - lovely to be outside for that as a breeze is beautiful when you are concentrating solely on that... By doing this it brings you into the present moment. It is only when you do this that you realise just how much we spend our time In the past, looking back, rerunning dramas and situations, and in the present, looking forward at what will happen tomorrow, or next week, or later...
Meditation does take time, so does mindfulness - but you are worth that time....don't you agree!,