Most Important: Intentions

Hadith Qudsi:

"Verily Allah has recorded the good deeds and the evil deeds." Then he clarified that: "Whosoever intends to do a good deed but does not do it, Allah records it with Himself as a complete good deed; but if he intends it and does it, Allah records it with Himself as ten good deeds, up to seven hundred times, or more than that. But if he intends to do an evil deed and does not do it, Allah records it with Himself as a complete good deed; but if he intends it and does it, Allah records it down as one single evil deed."

Al-Bukhari & Muslim