The healthiest creatures are those with the biggest appetites. A person who runs marathons will have twice the capacity to consume calories and not gain weight than a couch potato. Satisfying yourself and doing what you please – not in a selfish way or to the detriment of others, but keeping your own physical, mental and emotional needs in mind – makes you a happier person and more fun for other people to be around.
It is better to be nervous about having bitten off too much than to be frustrated for not having enough to chew. So go ahead, plan that big trip, or join your friend’s big trip. After it is over, you will be proud of your new accomplishment.