The saint of today is much different than those of the past. They used to be appointed by the collective “voting” by the public and even bishops of the Catholic Church could approve the status of a saint before the person had died. The current process is now done through the Pope and a special set of conditions must be met before sainthood is appointed. The process involves a dead Catholic person who is nominated for their holiness in life.
This process could take decades and even centuries to be approved. The local bishop must then investigate the life of the person nominated and writings of heroic virtue that will be reviewed by the panel of cardinals of the Congregation for the Cause of Saints for approval and declaration by the Pope that the candidate is venerable. Beatification is next and requires evidence of one miracle during the time period after the death and at the petition for a miracle in the name of the venerable candidate.
The next thing that must be accomplished to become catholic saint is another miracle to show that the beatified person should be canonized which allows them to be called saints which is simply acknowledging what God has already proclaimed. People do not really become saints, they simply carry out what God asks of them and those who answer his call and follow his rule to better the lives of others. Many saints exist without the need for actual recognition and it is important to strive to be a saint yourself.