A questioner asks how to focus when making dhikr? Mufti Abdur-Rahman ibn Yusuf discusses in detail. This is something that comes over time and it requires practice and training. 

One thing we have to remember is that even if we don’t get full concentration then we will get accustomed to sitting for 10 or 15 minutes for dhikr. Even if this is with negligence it is a bigger benefit than not sitting at all. 

We have to get used to dedicating time to Allah. If we can’t dedicate 5 or 10 minutes to Allah then how can we focus on dhikr?