I'm an avid hiker and I think that feeds my Se a bit. I'm sure I experience a hike different than a Se dominant, but I think it helps develop my inferior a bit. I've also been trying to make an effort to actually create something tangible with my ideas & feelings - usually something artsy. That seems rather Se to me.
My shadow functions are the ones I have problems developing. I seem to have a good enough grasp on Ne, but I'm clueless on how to develop Te, Fi, & Si. I'm equally clueless on how to stop feeling negative about Fi & Si. I feel downright selfish if I need to use Fi (and if I say someone did something selfish, I am normally referring to a Fi driven action) & Si is all but a mystery to me. Even in my thread deciphering my boyfriend's type (whom IS probably an ISFJ & an absolutely wonderful man), I was so hesistant to accept the Si dominant b/c I cannot figure out how to NOT think of Si in a negative way.