It doesn't matter what everyone else knows or thinks. What matters is that you are not happy with your drinking and you know that you need to change. You can make it harder on yourself by believing that because others don't see you have a problem, then you clearly don't, or you can accept that other people may either be telling you what you want to hear, or just aren't looking/aware of signs. Those people are not the ones who will have to suffer the consequences of excessive drinking... you are. It is your body and your life - don't let what other people tell you impact on your decision to be sober.