For protection, and healing I tend to surround myself in pink light, with extra blue around my chest.(copd)I learned this from my spiritual sister, just this year. If You need extra, I throw in some mirror shields. You don;t always have to use a 'spell.' Luck, I cant help you with, as much, though we do tend to create our own luck.
When things just get too tough, I light some incense, take a detox bath(epsom salts, scented)though in a pinch I've used a handful of regular salt. I ask my guardian angel for help. I don't do this often, but sometimes I need a push turning things around. Cleaning and smudging all negative energy in you home also helps, I feel, with protection and healing. If all else fails I do use an egg spell that a good friend taught me.
I never thought of mirrors at the windows....that's a nice touch.
Right now working with goddess freya to finish up personal business the more involved i get with norse magic more i like it tremendous amount of primal energy