You just pointed out the weakness of your plan yourself:

"The list can go on, but hey if the opponent makes no mistake, there is no way you can win."

In the concrete position it's hard for us hobby players to come up with a plan however I'm pretty sure any opening book contains more concrete plans than waiting for the opponent's mistake therefore you are wrong.

You keep telling me that I am wrong but you are unable to tell me why. This is ridiculous. In case if you don't understand me, I am looking for something like this:

"Ok, you are wrong because if 1. Qb3 followed by Bxd5, 2.f5 Nb3, 3. Bf3 Qh4+ ..blabla then White is in a worse position."

or

"If you do that you are hindering your own pieces. After Ne4, followed  by pawn rolling on the kingside, you will be helpless to stop the attack."

After all, we are discussing about the position that OP has posted. If you have some book references or some grandmasters' games with a similar position that have different or interesting plans, feel free to share with all of us here.

Don't tell me I am wrong because some books say so or some GMs say so. Now what books? Which GMs? I also want to know when I am wrong.

White wants classic kingside pressure or on the d-file.  I'm not good at sicilians so I won't suggest an actual move

I agree with wafflemaster, try to initiate something with moves like Rd1 in the center. Preventing the d5 break seems important as well, as that seems like black's most logical pawn move. Just make natural developing moves and you should be fine. However, waiting for your opponent to make a mistake won't win this position, as black is solid and has achieved a nice position. I would say this position is practically equal, but as a najdorf player I would take black here anydays.

Okay, I was assuming the Bd3 got there after Bc4 b5 Bd3, it's not really the best placement for White in this move order.  Be2 would be better, instead of f3.  But I know that's not the question.

It's still a balanced game, and Black has ...d5 coming soon which will definitely gain him practical equality at least.  White has played more to prevent an attack on e4 than on generating chances and taking risks, and has nothing special.  In the Sicilian, if Black can delay castling without serious risk of explosive attack, he's probably doing well.

As before, all I see for White is a plan with Qe1 or Qf2, which is very similar.  The first gives some residual power on the e-file while the second allows the Rf1 the opportunity to go to d1, which has advantages and disadvantages of its own.  Either of course allows the idea with Qg3 I mentioned previously.

a generic point -- which slightly ties in with Estragon's post above: white has brought his pieces out but hasn't developed particularly well. f3 and a3 are the sort of passive moves one sees from people scared to enter the complexities and double edged positions of the Sicilian. They are defensive, negative moves that do nothing to promote active play so it's not hard to see white has a problem coming up with a plan. There is no life in his position. Black's pieces and pawns are ready to jump into action because they are developed purposefully, harmoniously and actively; I would take black any day.

if both of you are waiting for mistakes, maybe its time to exchange pieces to bring the game to endgame. .

Waiting for black to make a mistake ? Blacks plans are clear he seeks to dominate the queeside via the c-file , the thematic posting of his knight at c4 followed by ..Rc8 gives him the advantage, followed by a well timed advance at d5. White's set-up is too rigid with no flexability since he has no counterplay in the center he has to seek counterplay on the kingside. But how he does that is problematic.

White has a more versatile position. 

Leonidas! You are wrong!

I think a nice idea would be to set up a battery by moving one of your rooks to d1. Also I think that pushing the B-pawn would not be a bad option, as it will block off future squares for your opponents bishop

I think a nice idea would be to set up a battery by moving one of your rooks to d1. Also I think that pushing the B-pawn would not be a bad option, as it will block off future squares for your opponents bishop

I would be nervous about how to handle d5 on black's next move. g4 looks interesting but i'm not sure.