The weakest house in your horoscope is your marital house and whatever you do, do not expect a happy married life. To make life happier, success in marriage is not that much essential. A second marriage is not going to be any better. I think you should concentrate on your other plus points and make life happier and useful. Perhaps 2019 will bring you better days when you may get a partner suitable to your temperament and that time, you could consider whether a remarriage is feasible. Please read my blog navagrahastro.blogspot.in to get a better insight into astrology.