How to know when the deeds are being accepted?

بسم الله والحمد لله والصلاة والسلام على رسول الله ، وبعد

Ibn Rajab رحمه الله said:

“Whoever does an act of obedience – out of the many acts of obedience – and completes it.

The sign of it being accepted is that he follows it with another act of obedience.

And the sign of it being rejected is that he follows it with an act of disobedience.”

[Lataaif al-Ma`aarif (1/224)]