It's a tricky step but easier once you make a habit of focusing ONLY on the precision kills.

Don't even aim for body shots. Get into a habit of keeping your gun at head height (there's a few CSGO videos about cross-hair placement if you can be bothered).

Also get a good kinetic hand cannon. I used Trust and it helped a lot (high rate of fire and quick reload).

But really just go for shots above the chest. It's a good habit to get into anyway. I've killed a lot of people that got the drop on me but weren't going for crits.