It’s hard to say what your mental state or thought processes will be like this March. If you were born in March, they may be pretty intense, as Pluto is stuck at 5 degrees all month, close to a square with your natal sun. Furthermore, your ruler Mars is at 0 degrees Leo for much of the month, giving you March Aries folks an intense shot of helpful energy. Saturn opposing your sun adds another layer of intense energy.
On the other hand, if you were born near the end of the sign, then you will benefit from wonderfully pleasant angles from Neptune and Chiron to your sun.That’s not intense at all. For the rest of you, it partly depends how you respond to Pisces energy. There’s a lot of it in March, and it may lift your mood or make you feel quite tired.
Planets also move into your own sign this month. Venus leads the way, entering on the 7th. Mercury follows, entering on the 17th. The sun brings up the rear, entering on the 20th. Energy in your own sign should presumably help perk you up.
We could also sum things up another way. Until the 17th, your mind is scheduled to be on Very Big Thoughts around issues that relate to the entire previous year or perhaps much longer than that. From the 17th on, your thoughts are scheduled to be on much more immediate and smaller matters. You may also get a single good idea in the second half of the month that proves useful for the next 12 months.