1) You do not want to fight. It doesn't matter if you retired yesterday as an E-9 as a JSOC Jedi from the coolest Tier 1 unit. Five rednecks with rifles probably have your number, if not today then next week.
2) Force multipliers matter even more when you have less force. I would call a guy with a NOD equal to 2 or 3 guys without them at night. If you can possibly afford it get body armor and NODs.
3) Ex filtration is probably more important than the actual operation itself. One guy can't shoot his way out of much and there is nobody to drag you off should you get shot or break an ankle. You can miss shots/ have bombs fail or whatever all the time if you can get away. Sure it sucks but you can always try again. On the other hand if you kill a tank then get blown up trying to get away you are dead. If you cannot figure out a very solid exfil plan it's probably better not to run the op. Live to fight another day is the optimal phrase.
4) Have a realistic op tempo. The reason cool JSOC guys or even plain old Infantryman can maintain the operational tempo's they do is that they have a bunch of support. People are gathering intel for them, others are planning operations, some more folks are fixing their vehicles, others are doing logistics, making food and such. Since a lone wolf does not have people doing any of those things they have to do it them self. Remember that gathering intel, planning, caching weapons, doing necessary maintenance and dealing with logistics is the stuff that lets you do the more gratifying part.
5) Be realistic about what you can and cannot do. Like AM said you probably want to lean more towards assassinations than harassment. No point getting offed trying to shoot some Joey. On the other hand doing a 1 man infiltration of a Brigade sized FOB to kill a General Officer probably is not realistic either. (Remember #3 Exfil)
Put in the time and do pattern and link analysis. In doing it you will probably find there are some good targets that are not very well guarded. Whacking the proverbial lynch pin is less sexy than offing VIP's or blowing up tanks but it is arguably more effective and certainly more realistic for a lone wolf.
6) Do not set patterns. Keeping a little threat wheel of your actions is a good way to avoid setting patterns. Also taking a couple months off of kinetic work is a good way to get other things done, plan, rest and let the enemy forget about you.
7) Have a reason to be wherever you are as much of the time as possible. Maybe you like running and use that to do some recon. Maybe take up bird watching to explain always being out in the middle of nowhere with bino's and a sack lunch. The point is to be able to explain why you are where you are in a way that is sufficient to the casual contact with a member of the other side's security apparatus.
8) Caches. A lone wolf is going to be living at home, probably still going to work and all that. Some caches are to spread out your proverbial eggs. Others are more operational in nature. In North Ireland the IRA were great at this. Their shooters would just be some guys in a truck until they grabbed their guns/ explosives from a pre planned cache a couple minutes before go time and went into action. Almost immediately after they ditched the guns, probably in another hiding spot, and vanished into the population. For a lone wolf maybe this would mean stashing a pistol or a rifle in a good spot, grabbing it and going into action then either hiding it again or worst case ditching it. Especially if he takes some steps to avoid fingerprints, gunpowder resin, etc and gets out of the immediate area a lone wolfs odds of getting away are pretty good. Certainly far better than if he tries running off wearing cammies and carrying a rifle through the street or woods.
9) Make some friends so you can stop being a lone wolf. Do this now. Get out of your shell and meet some like minded people.