If you're playing within your capability, what's the point? If you're not pushing your own technique to its own limits with the risk that it might just crumble at any moment, then you're not really doing your job.
“Life has no meaning unless one lives it with a will, at least to the limit of one's will. Virtue, good, evil are nothing but words, unless one takes them apart in order to build something with them; they do not win their true meaning until one knows how to apply them.”