You cannot be selfless with selfies. Take a picture of something else, of someone else, and adore that view, rather than your own face. Something along the lines of Native Americans not wanting their picture being taken as it would steal their soul, point of fact for some in the 21st Century.
Love exists not when you just love thyself or just love thy neighbour, but when the care and humanity is spread around multiple things. It is the time-wasting unproductive selfless action that benefits someone else, and makes you feel better, but does not necessarily benefit you. Such as giving someone an umbrella in the rain and then you getting wet.
I do agree that the standard of selflessness of the early 20th century of WW1 does not quite compare to that of the modern 21st Century. However it is better to look forwards to a time when there is no war or need to leap on a grenade than comparing a time of a war closer to home or further away. The 20th Century also lacked the Universal nature and Post-Imperialism found in the 21st Century and the ability to contact someone on the other end of the globe without having to cross an empire's borders.