Wellness is closely linked with the ability to be in reliance with every being alive, to be really connected with Life! So a good and healthy food will be of course helpful but should be related to your special and personal nature! In the same time there are rhythms and different fields for health so it should be added time for meditation or contemplative practices or any kind of physical and sport efforts, or creative activities. We have to be also in equilibrium with professional and social duties, internal and external environment!
We are all wearing memories or recording in our body (physical one and seen or etherical one, astral one, mental one that are unseen) that provide disease or troubles. Wellness is the ability to transform (undo or reset) those memories and provide equilibrium with all this factors!