I agree with the previous commenter. How much does it really mean to you? Where on your list of life priorities have you put "making it"? I'm in my 40's, work 80 hours a week, keep my bills to a minimum, still have an abundance of energy for my craft, and deliberately put marriage & kids on hold to specifically avoid the frustration you mention and focus my attention on what I believe is my purpose in life. Not that you should neglect your established responsibilities, but take a look at where your level of passion really is and try not to stay discouraged as that can also extinguish the flames of other aspiring filmmakers.