You may think that you are basically a good person, but that depends upon how you measure yourself. None of us is qualified to judge anyone, including ourselves. Anyway, even if the whole world thinks that you are a great person, it's no proof that you'll make heaven. As a matter of fact, the world usually gets it wrong. Therefore, do not judge or exalt yourself, but remain humble and let God alone be your judge. Only what God thinks of you matters.