No love that a man has will only give him pleasure in return- he shall also suffer pain because of it, except for love of Allah.

If you do good in secret, Allah will shower His good on you in public.

Sins cause harm and repentance removes the cause

It is strange that a person may find it easy to protect himself from: eating Haraam, oppression and injustice, adultery, theft, drinking khamr (alcoholic drinks), and from unlawful looking, but it is hard for him to restrain the movement of his tongue. How often do we see people who are very cautious about falling into shameful deeds or injustice, but their tongue lashes against the living and the dead and they don't mind it?

As for the people of Tasawwuf, they affirm the love of Allah, and this is more evident among them than all other issues....the affirmation of the love of Allah is well-known in the speech of their [old] and recent masters, just as it is affirmed in the Holy Qur'an and the Sunnah and in agreement of the ways of the early generation (Salaf)

Make tawba not just for sins you've committed, but also for obligations you haven't fulfilled.

The one who is [truly] imprisoned is the one whose heart is imprisoned from Allah and the captivated one is the one whose desires have enslaved him.