It depends on the conditions really but on slushy and generally mixed conditions leave everything switched on and simply take it steady, allowing lots of time to stop and ensuring you keep a close look on your rear view mirror for those who don't when you come to stopping. It is best to be delicate with the controls, no rapid movements of steering, pedals or gears and keep as much space around you as you can. In these conditions stopping is much more of an issue that going once you drive to the conditions. Keep the revs lower than you might normally, a gear or two up ideally and also use engine braking when slowing if needed, though again not excessively. Smoothness is the key and minimising the need to react rapidly all helps.
In deep snow or icy conditions with a RWD car this changes a little I would suggest and my advice from many years of driving RWD BMW’s is TC/DSC off when trying to navigate slowly down a very icy road if you are struggling. If you don’t the traction, even with a snow setting, will eventually get to the stage where momentum is lost and the car will stall. In such conditions some wheel spin controlled with the right foot it better and try to maintain a constant throttle if possible, no up and down on the pedal. I found this worked well with my M3’s and keeping a slow pace but with constant throttle and a gear up, so lower revs and torque typically made life easier, not least on hills and badly cambered bends.
Again stopping is the challenge and as above leave lots of space and reduce speed early and then crawl up to the junction, stopping point or turning. As I found out form an early age Scandinavian flicks and handbrake turns are best avoided on the public road as they tend to end up with you facing the wrong way with some, at best, buckled wheels. I remember leaving the house in my 1.6L Cavalier many years back and within 50 yards I’d run out of talent and ridden up a kerb damaging both nearside wheels!