"Busy" or productive? There is a difference between the two.The former being wasted, goalless and nervous energy. The latter being more focused and geared towards objectives.You do have the 3rd house cusp in Virgo and 6th house in Cap. Both these energies in an earth sign are geared towards making the most of your time.
3rd house in Virgo- you always have a small task at hand or on yout way to accomplishing something off the "to do" list.
Mercury is 3 houses away from the 6th(a house it naturally rules in the natural solar house system.). It is also 6 houses away from the 3rd(another natural ruler of the 3rd house in the solar zodiac).
Sun/Moon midpoint=Mercury. Mercury is in Pisces- it's ruler(Neptune) is in Cap. You feel a strong sense of duty to use time wisely(all Cap/Sat influenced people know the frigidity of life and the value of time used well)
Add to that Saturn and Pluto in the 4th house of emotional security.Pluto gives momentum to Saturn(even when not in conjunction) but by virtue of being in the same house.
It makes you feel good and emotionally in control to have a task/duty/responsibility or to accomplish something. This is your sense of "safety".
I agree that Mars/Venus gives passion when in Aries and drive. But I also think that Jupiter/Pluto square is large amounts of energy reserves given to you. It can feel "boundless"
Jupiter in 7th suggests that other people/public bring out the idealist in you.There is a need to "do over" the world outside of you to fit your philosophy(especially since we see that Jupiter is in humanitarian Aqua)
Add to that I agree that Mars/Venus in "action oriented" Aries in the 9th, makes the affairs of things that are happening outside in the world YOUR BUSINESS. So there is passionate commitment there too.
I think its great that you have an outlet as Pluto in 4th when restless can be irritable.The energy can be directed to the domestic front where emotional well-being is accompanied by upheavals and turmoils. Yikes!
At least when you are busy, the energy is focused more towards productive outlets i.e you are not about to slit someones throat just because they cracked the wine glass(for instance). Lol.