So while i was at work today (i drive my car around to stores all day for work) My ignition froze and would not turn at all i tried to turn it for over 45 minutes to no avail. I bought some Graphite and tried to see if that would fix it but it didn't. This has happened before but never for more than i'd say 30 seconds and today it just stopped. I'm getting it towed tomorrow morning to an auto shop but Upon searching the forum i found this has been a common issue I've read the "Sticky Ignition Key Fix!!" And have a question for those who may be more experienced.
1. How hard would it be for someone who isn't very knowledgeable about cars to fix this on their own?
2. If an auto shop fixed this themselves by putting in a new ignition cylinder or whatever would this problem re appear in a few years?

I really don't want to fork out the 1k-2k this is going to cost to fix if their is a cheaper and better solution. If you guys have any help it would be really appreciated.