Ohhh, good luck.
I had two springers from the same litter, both male. One of them was bonkers and the other placid as a soft thing.
SO the bonkers one (Banger) I had to constantly stimulate him by taking him out with me on the bike in the forest where he could run wild and find stuff/chase birds/rabbits/badgers etc. whilstt he other dog (Mashy) would quite happily stay at home on the sofa.
I foumd if I didn't excersise banger everyday he would just go mad and do loops of the garden all day wearing out our lawn and creating havoc, then he'd chew stuff, anything (including 3 sofa arms and bed legs/curtains etc) SO it was a must that I got him out with me on the bike, which was great fun actually. He'd always come back, very loyal, even if he'd scuttled off across the river.. I ended up taking him back to the farmer we had them both off for some training and that was amazing. He was happy in a pack hunting and once back home would just get bored and the whole scenario would enfold. I ended up taking back to the farmer because he was just happier there in the pack (that was a sad day I can tell you)
However, mashy was soft as, didn't want nor need anywhere near the attention banger did. In fact he was quite docile. I thought there was something wrong with him so once again a trip back to the farmer and he said that there was nothing wrong, in fact he was actually a very well balanced dog. So mashy would come out with me on the bike but he'd just trot along behind me. He'd sometime run off, but that was normally where the badgers were but again would always come back. unfortunatly we lost him when he jumped over our large fence and got squished by a truck going down the hill (it was a very steep hill and the trucks brakes failed, only a lane, not a main road) That too was a sad day.
I've chosen not to have anyomre Springers. Shame as some of my bestmemories were having fun in the woods, but with both of us working means they'd be locked up all day and I kinda like sofa/furniture I have at the moment.
All I would add is stimulation, hunting particularly. SOmething where they have to forrage and run off then return, hide stuff for them or at the very least throw frisbees/balls into reeds or forest undergrowth.. worked well for me that.