I spent 5 seasons in Glacier NP and the Bob Marshall Wilderness doing griz research. Most was alone and I usually spent 8 days at a time in the field between May and late October. I did a lot of thinking about the same things - over and over. I'd talk to myself a bit, but not in a conversation sense. When it came to bears - I took all the right precautions - good food hang, no scraps, no food in the tent, etc... and only carried bear spray. When I crawled in my tent, I'd often throw in ear plugs because at that point it wasn't up to me. If a bear wanted to attack, nothing I could do about it. I once crawled in my bag literally a couple of minutes after a big boar grizzly walked not 80 yards from my camp. I called out to him and said hello and then went to sleep. Beyond bears, I'd say focus and be deliberate. If you're using a knife, focus. Focus your mind and efforts. Stay in the moment as much as possible and be aware of your surroundings. Lastly, and for me, this was the biggest issue - creek and river crossings. Getting to the other side is never worth drowning. If you must cross, find a wide stretch, use a heavy stout stick and take your time, making sure to establish one foot before moving the next. My two cents.