I also aspire to be a millionaire one day. We have been saving for many years, we as a family lead a humble life as we continue to live in our first HDB flat, a 3 room flat, even though our family income has increased over the years. Our savings is now $700k and since we have paid up our flat, we are now able to save more. We hope our savings will reach $2m by the time we reach 65, another 20 years to go. We will need to restrain ourselves from buying a car or upgrade to a bigger home. We think $2m for a couple should be enough to retire in Singapore. We don't spend much.