Should we 'let our light shine' and tell people the good works that we do?

There are two subjects that could be construed as contradictory in our Lords sermon on the mount. Here is an instance: >1 “Be careful not to practice your righteousness in front of others to be seen by them. If you do, you will have no reward from your Father in heaven. (Matthew 6:1) > >In the same way, let your light shine before others, that they may see your good deeds and glorify your Father in heaven. (Matthew 5:16) So what is Jesus saying? Should we tell others about the good things we have done, being a role model and example to them, or keep those things secret?