Light bulbs burn out quickly mostly because of there is too high of a voltage in the light socket. If you are having to switch out light bulbs every few days, this can be a sign of a dangerous situation.
You may have too high of a voltage because the light was wired wrong or your house’s voltage may be too high. A good indicator of if your voltage is too high it that the light bulb will burn unusually bright. If this is the case, you will need an electrician to fix the issue.
Another reason light bulbs burn out quickly is if there is an issue with the circuit. In which case, it would be best for your safety to call an electrician to troubleshoot the issue.