Here experiencing good things is spoken of as seeing good things. 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. These two phrases mean basically the same thing and emphasize the command not to lie. Alternate translation: "stop saying evil and deceitful things" (See: [[rc://en/ta/man/translate/figs-parallelism]] and [[rc://en/ta/man/translate/figs-synecdoche]])