I think you should stop being afraid of your theory book, and concentrate on fighting your opponent in a game of chess. Especially rated at 1400, you need to experience interesting tactical battles, attacking chess, and basic strategic ideas.
Edmar Mednis wrote "A number of students have told me that they like to play 1.e4 except against the Sicilian. Such a 'complaint' makes no chess sense to me. I mean, 1.e4 is for those who like active, attacking play. Because the Sicilian delays black's kingside development while ignoring white's active development, attacking players should jump for joy when they see Black play 1...c5." (Practical Opening Tips)
He then goes over some lines involving: 1.e4 c5 2.Nf3 ... 3.d4 cxd4 4.Nxd4 ... 5.Nc3 ... 6.Bc4 against the main Black systems. Some of these Fischer used to play. The 2.c3 variation is also a good one.
Don't be afraid of main lines. Get an interesting position on the board (that's all a main line is - a position so interesting lots of people have played it) and fight it out. You will learn loads. Develop your tactics, and start to see the strategic ideas by playing the opening. Seek inspiration from your own games and those played by other people - not theory books.
(I had the same problem myself. I'm around FIDE 2050 now, and a 1.d4 player. All my life I've been afraid of the Slav. I got a book a few years ago advocating to play the main lines. So I plunged in with minimal preparation - my opponents never challenge me in a book line! But we get some interesting games, much better than the exchange Slav I relied on all this time.)