I keep a list.
brake vs break
lose vs loose
by vs bye vs buy
there vs their vs they're
aisle vs isle
collage vs college
passed vs past
ben vs been
an vs and
ware vs wear
worn vs warn
threw vs through (thru)
sell vs sale
then vs than
light vs lite
too vs to vs two
waist vs waste
flower vs flour
fair vs fare
aloud vs allowed
nada vs notta
dam vs damn
plain vs plane
descent vs decent
sore vs soar
advice vs advise
ad (abbreviation for advertisement) vs add
wary vs weary
latter vs ladder
vein vs vane
fourth vs forth (have a happy one either way)