Understanding and application

What is the best meaning of اغْتَنِمْ in Hadith 176?

Respectful Gatherings, Goodwill, Charity, and Valuing Time (Hadith 169–176)

• Make good use of the opportunity at hand
• Postpone every task until next year
• Ignore others’ rights while pursuing goals
• Complain about blessings rather than appreciate them