xman
We are often more mindful of the minds of others than we are of our own.
"My thoughts are constantly in motion and it is difficult to straighten out The thought process." I don't think there is a way to straighten it out in the moment; perhaps the best we can do is strive to calm it, make it less self-argumentative. And with time and patience, a mindful, accepting, and non-judging approach toward our own minds will do the work of straightening out the thought process. But it's slow, and mindfulness is tedious and sometimes cumbersome, and often elusive.
I'm sorry you are still having depression. I sense that you feel you are being inexorably moved into a corner: as deadlines approach and you're still struggling, I understand considering another SSRI. There is no right or wrong here, there's only your well-being, and only you can define that.
You have some time yet, and in general you've been moving forward and upward. Therefore, can you hold on to that mast for another 6 weeks and continue to push forward, without embracing thoughts and symptoms that seem to preclude one outcome over the other? If you can idle the self-analysis from time to time it's easier to identify the subtle improvements that do come along.
And at that time, re-assess where you are. If you can manage it- it just might prove to be a very worthwhile endeavour.
Take care.