Hey folks 
We meant to write this post earlier today, but ended up doing other things, so we're writing this now on our phone in bed 
We are currently on the max dose of sertraline daily (200 mg). It's helped a little with depression, a bit less with anxiety, and not at all with executive dysfunction.
We've previously also been on the max dose of venlafaxine extended release (375 mg). We came off this because it didn't work.
Until recently, we had been taking a low dose of bupropion extended release (150 mg) daily alongside the sertraline. It really helped with energy levels for a while, but it lasted only a few months at best. It also caused us to push ourselves too far several times and eventually burn out.
We are trying to ideally find a single medication that will help boost our serotonin, noradrenaline, and dopamine levels, but it doesn't help that most of these are not prescribed by the NHS. Those that are tend to be stimulants used for ADHD, which we presently do not have access to.
We've done a lot of research into the different classes of antidepressants (e.g., sSRIs, SNRIs, sNRIs, NDRIs, SNDRIs, TCAs, TeCAs, atypicals, etc.), but the only available options we see as being worth any attempt are paroxetine (sSRI) and vortioxetine (SMS). We really don't want to try another SNRI like duloxetine or older classes of meds.
Sharing any experiences you've had would be very much appreciated 