Attend all the meetings and make sure your WT / book is underlined. And if you have wronged someone, try your best to make restitution. That isn't always possible because some situations don't call for restitution. But, whereever possible, to so.
Of course, the verse used is WAY, WAY, WAY out of context. I wish I had realized that when I was an elder.
Paul was talking about his ministry to those in Damascus, Jerusalem, Judea and the Gentiles and was telling them to repent and do works befitting repentence. These people were not yet Christians. What "works" did Paul emphasize? He contrasted the works of the flesh with the fruits of the spirit in Galatians 5. The works he constantly talked about were the works produced by the spirit: love, joy, peace, etc. The works that befit repentence would naturally be things that showed one actually had the spirit, namely, helping others, such as the poor, the orphans and the widows. That these are the works Paul referred to can be seen easily by reading his letters.