What are the ways a Muslim can soften the hearts of their family members who are remiss in religious matters, and who shy away from advice and become angry when given it?

The call to Allah is one of the greatest and most honorable tasks. Do not tire of it or despair of guiding those far from obedience. Pray for their well-being and utilize every possible means, such as social media messages and beneficial booklets. Continue to be gentle with them and show them kindness, enduring their dry responses and meeting them with goodness. Be a good role model for them in your excellence and diligence, so they may know that commitment and uprightness are causes for success.