.I just think a person’s motivation for the process has a lot to do with whether or not they will eventually find a way. If you are not motivated by the process I would recommend assuring average returns straight away through indexing and averaging and get on with other aspects of life. If your motivated I would give much more rope whilst learning – you ask how much rope – I say it depends on the level of motivation, but I take your point that a motivated person still may be better off giving up – I wouldn’t dare attempt to say where that appropriate point is though.
Guess it is a bit like anything in life, if you are motivated and enjoy what you are doing the chances of success are that much better. From my personal experience while I have not been investing long enough for any results to be meaningful, I think investing is the best game I have ever played. So much to learn, so many permutations, part science part art and the chance of earning a decent reward for your efforts... What else would I want to do with my spare time?