Don't worry. Over my whole life I have had lucid dreams here and there. Yet It has taken me almost a month to get into this seriously and have a lucid dream. Out of that month I have only had 3 nights where I have been lucid. Of which 1 lasted about 3-4 minutes. The other 2 about 15 seconds.

My advice is keep a strong desire, be persistent and consistent.
Do reality checks. (I admit I don't do them hardly at all,but I have reasons for that)

Also wake up in the morning set the alarm early, so you are tired,but not too tired. Then you get a good chance at doing a "wild" and falling asleep easy. Also before you fall asleep tell yourself you must have a lucid dream and order yourself to have one.
so you won't waste your entire night and wake up and think dam it's over. Keep setting your alarm after about 5-8 hours sleep. Every half hour. That way you will get plenty of chances each night to have a lucid dream.

All my lucid dreams so far have been towards the morning after 5 hours sleep.

when you get in a lucid dream. and you will if you dont give up and think about it constantly.
Be aware you have to pay attention and be in the right state of mind so the dream does not fade. You can't think to actively or your brain will wake up. You have to remind yourself constantly that you are dreaming so you don't fall into a normal dream. And you have to pay attention to the scenery so it will not fade....

I have been making that mistake not being able to control the dream enough and I wake up really early and the lucid dream is over because I did not make a good enough effort to maintain it and I am not experienced enough to. but I have a feeling that will soon change I am on the brink of mastering it i can feel it.