Tenfold reward
مَنْ هَمَّ بِحَسَنَةٍ فَلَمْ يَعْمَلْهَا كَتَبَهَا اللَّهُ عِنْدَهُ حَسَنَةً كَامِلَةً، فَإِنْ هُوَ هَمَّ بِهَا فَعَمِلَهَا كَتَبَهَا اللَّهُ عِنْدَهُ عَشْرَ حَسَنَاتٍ إِلَى سَبْعِمِائَةِ ضِعْفٍ
Man hamma bi-hasanatin fa-lam ya'malha katabaha-llahu indahu hasanatan kamilah, fa-in huwa hamma biha fa-amilaha katabaha-llahu indahu ashra hasanatin ila sab'imi'ati di'f.
"Whoever intends a good deed but does not do it, Allah records it with Him as a complete good deed. If he does it, Allah records it as ten to seven hundred times its worth. Whoever intends an evil deed but does not do it, Allah records it as one complete good deed. If he does the evil deed, Allah records it as one."
Narrated by Ibn Abbas. Sahih al-Bukhari 6491, Sahih Muslim 131
A short reflection
The accounting is generously skewed toward us. Good intentions cashed without the action. Evil intentions cancelled by abandoning them. The scale is loaded.