Adderall. Take ZMA (especially magnesium takes the edge off), L-Tyrosine (building block for Dopamine which Adderall depletes) and fish oil with it if you want the comedowns to be manageable.
If not, basically any other hard stimulant. Vyvanse, Dexedrine, Ritalin, Mydayis, whatever they're a horse a piece. Each one works differently on everybody. One may work for you and another may not. But once you dial your dosage down it's all smooth sailing from there.
If uninsured/broke you could try micro-dosing crystal meth, it's actually FDA approved for treatment of ADHD, but with street ice you really have to micro-micro-dose it as in with a milligram scale, measuring out 5 mg (which is about the size of a few grains of salt) taking it twice a day through the mouth, never exceed 10 mg a day, never smoke/snort/IV as it's a very strong stimulant and that's how you get hooked.
Most people say modafinil works, maybe it does but I tried up to 300 mg a day which did jack shit, then found out via testing that I am a non responder to it (which apparently is a thing).
On the other hand I find it very funny that governments and big pharma see smoking as a bigger issue than prescription stimulants and opioids. I went to my GP today to refill a prescription. He asked how my mood was, if I am still a smoker, then spent 15 minutes explaining various methods available for quitting smoking. Then wrote me a 90 day script for what is basically medical meth, and sent me on my way. I guess it's OK to do drugs as long as you're doing the drugs the government allows you to.
Oh btw on the way out he said "have a nice day"