Ha! I know how you feel -- families can be totally obnoxious on vacation sometimes. They pick something that you're insecure about (either women, financial situation, etc.) and just harp on it non-stop like it is the ONLY thing going on in the world.
A few thoughts: You
don't have girl troubles. Seems like you have no problem getting women attracted to you, but you're selective and haven't found the right one yet. I'm similar in this regard -- nothing wrong with it. We have things a lot better than most guys in that
we get to choose.
It's not your fault if fate hasn't yet shown you your dream woman!
What your family and friends say has no I-M effect on your life. It's your life, your free will, your power to attract what you want into life using focused law of attraction techniques.
If anything, use your family's useless comments to strengthen your resolve. You
are going to manifest a great relationship; their comments and thoughts simply do not affect the energy field.
I say this from experience. I used to worry that negative friends would slow down my manifestations, but it does not. You need not share your efforts with others -- Wayne Dyer (and others) recommend keeping manifestations 'nonpublic' in many situations. I think it's a good idea because it takes the pressure off.
DA