true, but it depends what the OP is after.. does he want to form a small group of followers, or does he want 1 million subs and earn a wage?
he's given no hint as to any idea's he might have,
my advice is just to upload stuff you have an interest in or a hobby, i do it myself and have >1,300 subs,
random vlogs while you're shopping in Tesco aint gonna cut it