Hi
I withdrew from my PhD in 2011, due to a chronic health issue. I was halfway through it (had finished the coursework and the first paper), so would like to return to the same programme (which the University allows). But I don't know how to approach my former supervisor (whom I disappointed too many times) nor which strategy is best to regain the lost knowledge in as little time as possible.
All advice is welcome, as I'm truly lost.

Hi A_Neves

If you're very keen to return to the same programme, I'd at least get in touch with your former supervisor. You can explain your situation (or as much of it as you're comfortable with - you're not obliged to disclose a condition to your institution if you don't wish to) and explain your plans for resuming the project. If those are clear and well thought-out your supervisor may well be happy to re-accept you. If they aren't, you've not lost anything more than the time it takes to write an email?

Others may have more advice, but I'd certainly give getting back in touch a shot.

Mark