We tend to make a big deal out of "milestone birthdays" meaning birthdays that begin a new decade. There are other birthdays which mark life changes. Our thirty-fifth birthday is just such an occasion. We feel young, we have a fairly firm grip on our career at this point, our family is established or nearly completed, and we know who we are and what we want. So, if we have a friend or relative that is marking their 35th year on this planet, it should be a time of great celebration.