. However, it is only someone who calls himself an investor and refuses to accumulate consistently won't be privilege to have a big profit and lastly everyone has there standard and level that is to say that what Mr A will call big, Mr B may not call it big vice versa.
That's life. What you call big, maybe in someone else eyes be called small. Every one of us will invest as our capacity can carry. If it is once a month or twice a month that's okay, so long as our intention of investment is for long term.