Sometimes when I woke up in the middle of the night I would practice the whole of dvd7 and then fall asleep.
I would then in most cases have a lucid dream where I knew with 100% certainty it was a dream so no fear or any 'negative' emotion would arise. Very interesting for insight.
The whole of FP increases libido I think.
There is this deeply relaxing effect of FP which is unique. I sometimes feel like almost falling asleep while being awake while doing the med like GMDW does in his videos.
For mental clarity just about any FP med would do since the energy clears away any disturbance in the mind in my opinion.
Don't give up, just keep going, the proof is in the results π