Here experiencing good things is spoken of as seeing good days. The word "days" refers to one's lifetime. Alternate translation: "experience good things during life" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-metonymy]])
The words "tongue" and "lips" refer to the person who is speaking. The phrases "his tongue from evil" and "his lips from speaking deceit" mean basically the same thing and emphasize the command not to lie. Alternate translation: "stop himself from saying evil and deceitful things" (See: [[rc://en/ta/man/translate/figs-synecdoche]] and [[rc://en/ta/man/translate/figs-parallelism]])