One of the main reasons I got into PE was to correct premature ejaculations. It is working for me. In the begining I sometimes could not control myself during the wet jelqs and I ended up shooting my wad. So I was all done. If this is what happens then you are not controling the situation.
Last night I had a half hour mastrubation session. I enjoyed working my big hard-on without coming. When I did finally shoot, it was very enjoyable. Before PE this type of session would be 2 minutes for me.
This morning I did 15 mins of wet jelq session without cumming, of course. Now at work I am walking around with a half a hard on and it feels great.
The main thing to remember is PE is an avenue to better sex. PE should not be sex.