Very well said @richdad & @Craig
It's best to go into a business one has passion for, a market one is well informed about and an area you know the joys and flaws all too well. Find out what in your life/environment answers questions asked above and then plunge into it..kidogo kidogo tu,and watch yourself grow from the hard work of your hands and the smart moves from your God given brains.
Nevermind what haters say, ignore them til they fade away - Just live your life