12. Resolved, if I take delight in it as a gratification of pride, or vanity, or on any such account, immediately to throw it by.
13. Resolved, to be endeavoring to find out fit objects of charity and liberality.
#12 is about watching and guarding yourself from sins. If anything provokes or stirs up a sin in your life, the only rational thing to do as a Christian would be to give up the very thing that makes you feel sin so pleasurable. Does this apply to every single situation in life? It may not. But it's a good mind-set to have all the time.
#13 is a positive flip-side of #12. By actively seeking out things or persons to pour your love (charity) and exercise your freedom (in Christ) is not only good in inself, but also will help to counteract the things that #12 is trying to address.