The more you see japanese words, the more natural it'll become. You won't even have to think to recognize the kana or kanji. It's like the ABCs. It just takes time and lots of exposure to the language. I remember when I first started learning it in high school, it took me a couple of weeks to not have trouble telling the kana apart (things like め and ぬ). Over the years, it'll become like second nature and you'll be able to read japanese as fast as your native language. By the end of your learning, it's mostly just vocab you'll be working on once you get down the grammar. But first, most important thing, is that you keep at it. If you stop now because you feel it's too hard, you'll never get anywhere.