When you think of tough love, often what comes to mind is a parent/child relationship. Or maybe a "boot camp" for a teenager with behavioral issues.
Or you might think of a drug abuser going through rehab.
Wikipedia defines Tough Love as: "an expression used when someone treats another person harshly or sternly with the intent to help them in the long run."
But I like to think of it more in terms of a person being caused to experience or do what is best and healthiest for them, regardless of whether that is what they really think they want.
Typically also you think of it as being something that is "done" to another person, often really against their will.
So how would you show yourself "tough love"?