..and when you do get to 35 spend all day regretting that you forgot to have a good time in your 20s and trying to work out how to get out of your boring marriage and do the things you should have done earlier.
Right or wrong I told my children to get a degree in their late teens early 20's, do whatever turns then on in their 20's (travel, etc) Build a career in their 30s. Settle down in their 40s. Build wealth and save for retirement in their mid 40 and 50s.