Pre-validated tools are optimally used to measure an intended outcome, it is almost always better to use a pre-validated tool rather than constructing a survey de novo.
The following are resources for validated tools developed by multiple institute and specialized researchers for use by others:
RAND institute surveys
Questionnaires, strategies, guidance for evaluating and improving WHP at the company level
Division of Cancer Epidemiology and Geneticsat the National Cancer Institute
Surveys by North Carolina Department of Health and Human Services
Screening tools for Alcohol, tobacco and other drugs