Resently I saw a topic on "slide flying" and I was wondering what should be done if I am drifting in flight simulator?

Example 35000 feet up gps says go heading of 135 at a heading of 135 I am drifting a few miles off course what I do is change my heading in this case maybe to  a heading of 140.

Am I doing this right or is there a device I don't know of like yaw that will correct the aircraft for me?

Any help would be great

Thank you