There is no reason variety and eating out should mean you are getting off track.
When eating out, just make sensible choices and substitutions.
When eating in, use different vegetables and seasoning to ensure variety while still being healthy. Also, in terms of starches, there are many different types of rice; potatoes can be cooked numerous ways; and if you have a flair for baking, you can adjust certain recipes to make various breads/biscuits that are actually healthy.
James 1:16-17 ESV
Do not be deceived, my beloved brothers. Every good gift and every perfect gift is from above, coming down from the Father of lights
With God's help...Mens sana in corpore sano