Dear Elsa,I will soon be turning 40. I never thought I would go through a mid-life crisis phase, but I feel I may be in the depths of one. I married at the age of 19 and we've been married for almost 21 years. We have two wonderful teen-age daughters and I will graduate college in December. With all this great stuff going on in my life, why do I feel so empty? I feel suffocated and tied down. I went to the movies last night... alone again. My husband works out of town and the girls...