Effie it is never too late to start on the path of recovery. Your daughter is 4 and will soon notice what mummy is doing. More, don't you want to be around for her growing up, marrying, giving you grandchildren?
Stop drinking now. Get what ever help you need, lean on anyone who offers help until you are strong enough to stand alone. Alcohol is a poison that destroys everything, I have taken years to reach the point of realising I can never drink again. I am 2 months sober, I never thought I would make it, but I am on my way.
Get to know you sober befor embarking on a new relationship, be honest with him, if there is a future he will stand by you. If not, he wasn't the one. Be strong, be safe, be sober.