Peugeot Partner 2.0 HDI Gearshift?

First of all, I wish you a good day ... It is very difficult to get stuck when you shift the gear to 1 with the vehicle. However, it is comfortable when you stop at the Lights and put the gear back on 1? What's wrong with this? Also, how many thousand revolutions should I change in my vehicle? Yours ...

It was happening in my old car, sometimes it doesn't happen 1, in this case when I get 2 then 1