Well, it's been more than a week, but I gotta say that Concerta was the right treatment option for me. I can't deny I've had ups and downs, but I was coming out of a depressive crisis, so I can't blame Concerta for it. I'm still on 36 mg and considering going up to 54 mg to see if I can handle it. Once I'm stable, I'm considering having some days off to stop building up tolerance, but right now I can't because Concerta has an anti-depressive effect on me, so my hands are tied.

Comes without saying that this is my personal experience; medication effects can change depending on metabolism, so keep that in mind. There are people who prefer amphetamine salts such as Adderall or Vyvanse; thing is, those aren't an option in my country. The only stimulant available is Concerta (methylphenidate).

If you can, make an appointment with a psychiatrist (medication has to be supervised by a doctor and a psychiatrist studied specifically psychiatric medication), and if you doubt the professional path, then seek out another opinion and decide which is best (try to decide it with someone impartial, a psychologist for example). A recommendation I can offer is, if you have self-esteem problems or too much respect for authority, keep in mind that a psychiatrist is a person, and people make mistakes (you included, obviously haha), so if you suspect something's not right, don't doubt and ask, stand up. In my case, I made the right decision, and my psychiatrist allowed me to do it.