No, You might not need to study again, rather adopt a path to advance your career towards a practical career having international recognition!

Can-Collge's Bridge Training Program could be the best choice to begin with. 

For example, all Canadian Citizens or Permanent Residents don't require a work permit or any other Immigration status besides having a license in such occupation(s), but foreign nationals who wish to work or practice in a regulated profession/occupation must equally meet required licensing standards even if they don't have an Immigration status in Canada but wish to have the Canadian license to serve the Canadian interest worldwide.  A Foreign-trained Lawyer, Physician or CGA, CPA, RN, and others may apply and get a license from the Canadian body even if they are not Canadian Citizens/Residents.

Canadian business and employers prefer to work with professionals who are licensed under the Canadian Jurisdiction/body.

The Can-College Bridge Training Program helps eligible internationally trained professionals enter the Canadian and/or any other global workforce.

Use this link to explore and apply