One thing about Ozuna's reported attitude issues - they happen to be caught up in the war between Loria and Boras, who happens to be Ozuna's agent, but also the agent for Jose Fernandez, as well as Matt Harvey and Steven Strasburg. Boras has increasingly become involved in player-use issues, not just compensation. Loria seems to have taken upon himself the fight against this. When he says he can't stand Marcell Ozuna, it's probably because when he tried to keep Ozuna in the minors to reduce his MLB service time, Boras publicly made an issue of it. Boras is also apparently behind the analysis of Miami revenue v. payroll and other subjects Loria doesn't want in public.
Loria is a selfish, egotistical, one-way, check-valve, diode SOB. There's really no other way to say it. (So is Boras, for that matter). The MLB system is built to keep players, especially young players, insecure. What would be the effect of taking a young, insecure player from a Dominican background out of a situation where it is published in the national press that his boss "can't stand him" into a situation where his playing time will be based on his performance?
The feed pump watch on steam-powered ships, even nuclear ones, is a lousy watchstation. It's hot (120) humid (98%+) and down in the lowest levels of the ship. If the ouside water temperature is 80, and the outside air temperature (which is your ventilation source) is 100, as it is in the spring and summer in the Persian Gulf, it's a nasty place. But it has to be manned, and if the feed pumps trip off at the wrong time, for whatever reason, it is imperative to restore feed flow to the boilers FAST. I found that timing the guys on restoring feed during drills before deployment was useful. At least I could say to the guy I put on the watch - "look, you're down here because I can depend on you - you're the best at this" rather than let him think "I'm down here because they hate me!"
I believe it can be similar on a baseball team - objective criteria, even if not in your favor, are easier to swallow than subjective ones. If you're insecure anyway, knowing that your playing time is being determined by your performance, and not by notes from the owner's box, should be a great help to your attitude. Then add support from personalities like Cano, Cruz, Guti, Felix,..... I think the problem is fixable.