I would like to know why 2 years ago posters were saying his backhand is not professional quality, and it still hasn't improved. All a pro does is train during the day, how does he even regress? Was it because the ascension into the top 50 got him overconfident about his abilities?
Perhaps that and being touted from age 16 as the next America superstar. If there were no expectations on Ryan, he'd probably play in a less tightly coiled, ready-to-implode mode --- with much better results.
Another problem is his revolving door of coaches while his real coach (Dad) is always overseeing things, which is probably why the coaches quit or are fired. What coach wants to take on a player with an uber-coach in the background really calling the shots?
His bad techniques and lousy emotional control came from years of being coached by Dad, so it's impossible for a new coach to take charge and make any headway. A little like the Donald Young problem, but not nearly as extreme.
Ryan can make a clean break, unlike Donald who seems a victim of the Stockholm Syndrome, but he better "do a Murray" soon --- quit all family coaching, go out of his comfort zone of known 'trusted advisers' like Roddick, and get a stoic no-nonsense coach like Lendl.
Sure, some players get fired up with a little show of emotion, but not an immense disgorging of negative feelings like Harrison does. Fist-pumps and screaming "allez" or "let's go" are positive emotions, but smashing racquets and screaming expletives only emboldens the opponent to go in for the kill and derails any chance of a positive energy flow (getting 'in the zone').
Roger and Rafa talk about that state, where they block out everything except concentrating on the next point, a kind of altered state. A mistake on the prior point is instantly forgotten as it's history and useless to remember as it can't be replayed. They trained themselves to 'let it go' as it's non-productive to think about it. In that unstressed state, everything flows effortlessly, the muscles relax, the strokes are free, and energy is not wasted.
By contrast, Ryan spends too much time dwelling on his recent mistakes, getting tight, and thus not hitting freely. At 21, he's got a little time to turn things around, but the window is closing quickly.