challenge vs achievement
a situation in which someone is trying very hard to win an argument or deal with a difficult situation
battle
decided to achieve something
set smb sights on
be easily remembered
stick in my mind
to learn from a negative experience not to do something again
learn my lesson
to stay up late at night to work or study
burn the midnight oil
a difficulty or problem that prevents progress or success
obstacle
up to a satisfactory standard or quality
up to scratch
a bad memory
a memory like a sieve
to show someone as a result of experience what not to do
teach him a lesson
to stay up all night, especially to study or work:
pull an all-nighter
something unusual, brave or entertaining that someone does
exploits
going to bed late and getting up early
burn the candle at both ends
are forgotten immediately
go in one ear and out the other
You are giving advice to someone about something they know more about than you
You're teaching your grandmother to suck eggs!
spend the maximum time studying
bury in books
something impressive and which often requires courage
feat
progressing rapidly
in leaps and bounds
helps me to remember / reminds me
jog smb's memory
It's difficult to make someone change their way of doing things, especially if they have been doing it for a long time.
You can't teach an old dog new tricks
to begin studying hard
Hit the books
an extremely unpleasant experience, especially one that lasts for a long time
ordeal
all the time
work round the clock
learn something to be able to repeat it exactly (even if you do not understand it)
learn by rote
study in a very concentrated way for a short time
cram for
to learn/know how to do a job or activity
Learn the ropes