Juvy,
Don't get too hung up on questions about your own employment. The ECO is not really interested in that unless your income/savings etc are going to be used in sponsorship.
UKBA must be sure that your sponsor can afford to include an additional consumer (ie you) in the household.
Sometimes it can be a double edged sword to provide loads of information about independent wealth or very high income levels in Pinas. The ECO will then likely question you as why you want to settle in UK.
There's usually no problem to just be honest with your answers and enter self-employed. If that's the case and there are no issues with BIR
Good luck
