Yes it happens that high investment plays a key role to get more capital , It can be achieved by your trading skill. You have to use your capital wisely. It is up to a trader he did full time trading or part time trading. Trading as a career need much attention and is profitable business.Stick to your job as a lab assistant.
General retail forex trading should never be treated as a full time career, unless you are working for an investment bank or a hedge fund.
Forex trading should be taken as the means to grow your capital, not provide you with a consistent recurring income.