There seems something wrong with the position.
White has played 9 moves: d4, Bf4, e3, h3, Nc3, Nf3, Ne5, Bd3, O-O
Black has played 10 moves: d5, e6, a6, h6, Nc6, Nf6, Be7, O-O, Bd7, Be8
How did white get behind one move?
Striving for e4 or c4 may be viable.
Another possible plan could be to exploit the weakening ...h6 by g4, intending either g5, or h4 and then g5.
Llama - thanks! Exactly what I was interested to hear. And not too simple…you can’t make it too simple for me 
Tygxc - you’re missing a take back, f4 bishop was earlier at g5. Something I was trying quite early in the opening, but I think I was lucky to get away with it.
AtaChess - I’ve heard of the databases, but not accessed yet. I’ve been back to look at my own games which is as far as I’ve consulting previous games. Thanks!
We will never reach nirvana in chess or perfect black waiting position like!! But as you follow the white rhythm or taking initiative forever you must try to weaken black king defences and to increase pressure there waiting for black to lose control!!
@6
I see: Bg5 h6 Bf4 lost a tempo as opposed to Bf4 immediately.
On closer inspection I think white must capture Nxc6 Bxc6 so as to play on the bad bishop Bc6 and prevent black from playing ...Nxe5 Bxe5 c5, attacking white's center.
This position is not in any data base, I checked. By what move order did the position arrive? I suspect both sides did something suboptimal to reach it.
First move I looked at for white was Nb1 but maybe black just takes on e5 and gets …c5 in (the c3 and c6 knights are misplaced as they’re blocking the pawn break. So maybe exchange on c6 and after black takes back with the bishop play Qe2 and if Black doesn’t do very much, play Nc3-b1 and c2-c4.
If white could play c2-c4 in the initial position (illegally jumping over the N) then I would think white can claim an edge, as it is, it’s probably pretty equal (although I would choose white), but as has already been mentioned without any pawn breaks you’re either just moving pieces around or going for a kingside attack that probably shouldn’t work.
(One thing I would add is that while I mentioned Black maybe taking on e5, that would have to be well timed as after white takes back with the pawn and kicks the N away whites kingside attack can become quite serious but it depends on the specifics at that time)
I’m white here and a beginner. I don’t know any opening books by heart and certainly don’t have a favourite. I simply try to employ the basic principles of 1) control the centre, 2) activate my pieces, and 3) castle. I of course do this with an eye on my opponent, looking for blunders on either side and for hanging pieces. And sometimes, when my opponent is doing similar, we’ll end up in the above situation.
I think I am in the ascendancy. I have pieces farther forward and my bishops are better activated. But any advantage, if any, is slight.
So what are my goals from here? Not specific moves, just goals.
Is it now I should be looking at starting piece exchanges? Or keep it closed, potentially letting black make the bolder moves and exposing him/herself?
I’d prefer to take the bull by the horns and try to dictate the play myself, but wondering what goals you can suggest to apply to this sort of middle game.
Manyt hanks and hope I’ve made myself clear