contemplate one's navel
self-abnegation
self-involved
self-absorbed
self-obsessed
self-absorption
self-interested
self-regarding
lose the plot
numero uno
self-serving
lost to the world
self-abnegatory
idiocentric
solipsist
self-minded
tunnel vision
obsessive
know which side one's bread is buttered on
navel-gazing
selfish
keep one's cards close to one's chest
he who hesitates is lost
monomaniac
dismissal
skate one's lane
self-seeking
stick to one's knitting
self-questioning
every miller draws water to his own mill
individualistic
whoosh
selflessly
space cadet
centration
have a mind of one's own
egoism
seclusion
self-motivated
solipsism
change the subject
put out of one's mind
brainful
echo chamber
self-centered
egoistical
self-centred
self-conceited
egocentric
preoccupied