“A marriage proposal should not come as a big surprise, despite what you may have seen in the movies.”
“Always be prepared to leave your employer because they are prepared to leave you.” Advice is offering someone guidance or offering someone a recommendation. Keep in mind that giving someone advice is not the same as giving someone a LPT.
A Life Pro Tip (or an LPT) is a specific action with definitive results that improves life for you and those around you in a specific and significant way.