What do think will prevail, the truth or a better lawyer?

I'm in the middle of a custody battle with my ex. He currently has custody of our daughter due to my battle with alcoholism. I've now been sober for two years. He continues to drink, not hold a job and live off of the system. My life has completely changed. I have held my current job for a year and a half, live in a home which my long term fiance' and I own and pay my bills. Unfortunately, he has a good lawyer and family who will lie for him and attest to his being a great father.