Fifty years ago when I worked near Eden SD the local auto repairman lost his hand at the wrist when he was about 5. He was a very good repairman and faster than most , just the stub. Starr, the man I was working for asked him what he would do if he had his hand back, he said he had no idea.
A customers son now a Junior in High School lost his hand in about the same place about 5 years ago, he dosn't back away from anything.
Attitude has more to do with getting along without a limb than anything, The worold is full of amputates who treat it as inconvent not a handicap.