Since you have just 3 booleans you could use a case statement for all 8 possibilities.
SELECT
(CASE
WHEN myPlan = 'True , True , True'
THEN 'Breakfast, Lunch, Dinner'
WHEN myPlan = 'True , True , False'
THEN 'Breakfast, Lunch'
WHEN myPlan = 'True , False , False'
THEN 'Breakfast'
WHEN myPlan = 'True , False , True'
THEN 'Breakfast, Dinner'
WHEN myPlan = 'False , False , True'
THEN 'Dinner'
WHEN myPlan = 'False , True , True'
THEN 'Lunch, Dinner'
WHEN myPlan = 'False , True , False'
THEN 'Lunch'
ELSE ''
END) myPlan
FROM myTable