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