you as a parent has every right to see your children when it suits the children and yourself, we all have experienced bad times, it took me a very long time to get things sorted with myself and the kids, my ex would let me see them when she needed to go out so in other words a free baby sitter, but as long as you write every little thing down and keep a record that will hold you in good stead for when the courts decide if you both cannot do that yourself, its hard but the best thing is to keep busy yourself