Buy one of these: https://www.amazon.com/ChefsChoice-EdgeSelect-Professional-Sharpener-Sharpening/dp/B0018RSEMU https://www.amazon.com/ChefsChoice-EdgeSelect-P

Buy one of these: https://www.amazon.com/ChefsChoice-EdgeSelect-Professional-Sharpener-Sharpening/dp/B0018RSEMU https://www.amazon.com/ChefsChoice-EdgeSelect-Professional-S... But you have to let go of the "ruining it" fear. Sharpening a knife does ruin it, you're taking off a tiny amount of material each time. Since your knife is full bolster, you'll eventually notice a small difference in height of the blade at the bolster. Yes you will ruin the knife over decades of sharpening. In the mean time you have a wicked sharp knife that's a joy to use (not just look at). It's a tool not an art piece.