Question: hgss how to raise happiness?
Answer: Walk 256 steps with the Pokemon in your active Party. ... 
Give the Pokemon Vitamins [HP Up, Carbos, Iron, Protein, Calcium, Zinc, PP Up] (+5 0-99, +3 100-199, +2 200-254)
Usage in Important Battle [Gym Leaders, Elites, Champion] (+3 0-99, +2 100-199, +1 200-254)