This was literally THE first thing I bought for getting laid, probably would again if I were starting over. Definitely makes me feel way more confident, especially around crowds of people.
At this point I've got ~5 different sizes, so I can fit something to most of my shoes, the tallest ones I only really wear with big boots. Eventually got some from tallmensshoes, definitely worth it - they're 1000x more comfortable than normal shoes with lifts in them, if I'm out during the day or for a long time I usually wear those.
If you find the common adjustable ones on amazon mess up your ankles (they did for me, couldn't wear them more than ~1 hr), the hard foam ones solved that for me.