I need help. I don't have the will to go on anymore..please help me find hope again

Im lost...I own a failing business that I dont even know how to begin closing. I think Im in love with someone other than my husband..emotionally at least. I dont know how to close that either. I have a beautiful baby girl and a wonderful super smart handsome son and I dont want to break apart the family but I am not happy. Please pray that our Lord will provide me with strength and guidance thru this very hard time.