Hi, welcome to the site.
SCMP 2 unit page
You could start by explaining that there are a range of factors that influence well-being.
eg:
attachment
relationships
emotional security
health
self esteem
diet
exercise
rest and sleep
prompt medical/dental attention when needed
preventive health programmes
Then research each factor to see how it impacts on well-being and include that information and any quotes from creditable sources eg.
lack of sleep on NHS.uk
If you've a handbook -
on amazon.co.uk the scmp chapters are good reading.
Best wishes