That really depends on what is your investment strategy, your risk appetite and your investment horizon, among other things.
Value investing is fundamentally different from trading, so the switch can be psychologically difficult for many people.
You have to really be committed to investing for the long term (think more than 5 years; in fact 10 years is the norm; and Warren Buffet himself has stated that his favourite holding period for a stock is forever).
Which also means disassociating yourself from all the short term negative news and possible volatility, and basically close your eyes and ears, to the point where you can forget about the stock for several years and it wouldn't bother you.
As you said yourself, dividend stocks are generally stable companies which have less capital appreciation (though actually stable dividend stocks are not necessarily blue chips) so they tend to be very boring stocks, which may not suit everyone's taste.
Personally, I avoid all companies which are highly linked to Malaysian politics, and all commodities, and most technology companies.
But that's just me, a novice. 

18% is a very respectable number, keep it up!
But personally, I'd keep away from margin financing, no matter how lucrative the investment might be.
Even financially sound companies can go bust anytime, and even if they don't, there are bound to be sudden spikes and dips along the way, especially looking at the global financial situation right now, I do not think Malaysia is in a particularly strong position.
Never ever ever invest using money that is not yours.

Ultimately, you have to decide your own investment strategy. But from my point of view, since you just graduated, meaning you still have 30-40 years in front of you before you retire, focusing too much on dividend might not be the right thing for you. I say 'might' because I have no idea what's your personal situation.

However, if you plan is to maximize future wealth, focusing too much on dividend can do more harm than good to your long term return. Since your focus is to generate a long term CAGR, focus on return on capital and the quality of the business. ROC is the ultimate long term key driver that decides your long term return not dividend. Dividend is just a byproduct of a management decision.

Not to mention, yes dividend is great, but you have to take into account that those dividend that you receive needs to be invested back into the market, so you have to think about reinvestment opportunity - is there always another good opportunity waiting for you? You have to think about time, how much time you have to spend researching to find the right opportunity, and lastly, the probability of making mistakes because of decision fatigue. These are all opportunity cost.