So see a PGA teacher/Instructor. It is very difficult to provide any assistance without seeing your stance, swing, etc. They are pros and well trained in correcting your problem. If you are serious about correcting it, find a pro in your area.

Those of us on this forum are loyalists just like yourself. There might be an instructor of two on here. But they need to see your "hit" the ball.

There are several things that can lead to a slice. You need to see an instructor who can analyze your swing and point you in the right direction.

Everyone has this issue every once in awhile, what i have found for myself, is using a stronger grip and depending on the driver you have the settings being adjusted could always help too, from what i have been told so if i am wrong someone please correct me, if you adjust the loft and increase ith from lets say 10.5 to 11.5 it will naturally close the face more at impact. if thats is an issue for you off the tee!