indeed we have our own bussiness to be accomplished, but it doesn't mean to lead to selfish
it's called selfish if you always try to make your personal needed be number one whenever the situation is
it's a wise thing if we can place ourselves on the way of others' feeling while asking something, not urging someone to fulfill our needed first
it will be more beautiful when tolerance is exist.
no one would feel hurted and sincerity is always in the air :)
indeed 'take and give' will not always be rewarded the same way for several conditions, but at least 'take and give' will be initial tie to convince that 'we are tolerance each other'
sometimes it becomes a questioned relationship: "are we friends?"