Sounds like you have dry eyes a lot, just like I do. I also use eye drops, and also have trouble getting them in all the time, but there’s something else I do that really helps. Get a washcloth and run it under really hot water. Then lay back and drape it over your eyes. Now this is where your patience comes in, because ideally you want to lay there for a good 15 minutes and not do anything, which I personally struggle with. Anyway, this really seems to help with when your eyes are dry, maybe even moreso than the eye drops. Of course, if you’re at work, you can’t stop and put a washcloth on your eyes for 15 minutes, so it has its limitations.