If I were...

If I weren’t a secretary, I would be a social worker
If I were a social worker, I would like to help to the homeless and elderlys
If I had enough money enough, I would start my own foundation

If I were ten years younger, I would travel around the world to learning [OR to learn] different idioms.
If I were ten years younger with the knowledge that I have now, I would do a lot of thing differently and wouldn’t stay twenty years in the same job.
If I were ten years younger, I would learn and practice risk extreme sports. [Like skydiving?]

If I were twenty years older, I would retire and go to live to by [ALSO OK: by OR at] the beach
If I were twenty years older, I would live my life trying don’t not to worry in about simple problems.
If I were twenty years older, I would try to have a healthy diet and work out by walking every day.

Notes:

"Elders" is a real word, but we usually say "the elderly" when talking about older people as a group. "Elders" is usually used when talking about a position in a group, like "church elders" or "village elders."

This might be too advanced but here is an explanation of when "enough" should go before or after a word: http://www.edufind.com/english-grammar/adverbs-degree/. ;

"Workout" as one word is a noun or adjective. "Work out" as two words is a verb.