द्वेष्यता शत्रुवेदनं दुःखासङ्गश्च कोपः ॥ कZ_०८.३.१४ ॥
dveṣyatā śatruvedanaṃ duḥkhāsaṅgaś ca kopaḥ
Anger results in (i) becoming hated, (ii) provoking/creating enemies, and (iii) an ongoing attachment to suffering (a continuing chain of troubles).
Loss of goodwill (becoming hated), strategic harm (enemies are generated), and administrative drag (a continuing chain of troubles).