give it protein, zinc, etc... Battle with it. Use items on him/her when it's hurt. Do NOT trade it to another game or you'll have to start all over again on trying to evolve it.;148;
Does anyone know how you can tell how happy a Pokemon is? (I'm trying to complete my Dex in Emerald and to do that I'm evolving Golbat to Crobat, in case you're interested.)