What if a very beautiful and captivating girl appears in ur meditation n It is getting difficult to think else?

Why then focus your meditative self on the girl. Ask her what is she doing in your subconscious. Find out what it is she represents to your mind. Once you know what she represents, focus your meditative mind on that, and ask it why it wants to disturb your concentration, why it wants to keep you from being present in the moment. In other words, talk to yourself and ask you why you are willing to cause further separation between you and your goals.