AdSense is a double-edged sword; sure, it can earn you money but it can also be a distraction. Picture this:
You have a new website and you've been accepted by AdSense so you rush off to generate the code and install it on your site. Perfect, you think, the money will soon come rolling in. WRONG! It won't and this is why.
Tip #1 AdSense don't disclose which niches have the best Click Through Ratio (CTR). (By the way CTR is clicks divided by page views so if you have 10 clicks from 100 page views, your CTR is 10% - that's actually extremely high, so is just an example.)
Tip #2 If you have a new website, you probably don't get more than 10 visitors a day which equates to 30 per month. Even if your CTR is 10%, you have had 3 clicks and unless you're in a very high value niche, you have just earned around $0.30
Tip #3 The average CTR is probably between 0.5 and 2%, if you're lucky, so look at this another way, you didn't earn anything like $0.30 cents in the month.
Tip #4 Don't let AdSense distract you! I remember when I first started, I couldn't wait to look at my AdSense account to see how much I was earning and when I discovered it was virtually nothing, I thought that maybe the ad positions or colours or content were wrong, so I moved them and changed them but the income didn't get any bigger because I didn't have the traffic and I was wasting time that I could have used to create content.
Tip #5 Did I mention content? Well I will now because it's the life-blood of a website, particularly one that aspires to earn with AdSense. Unique, informative content is paramount.
Tip #6 Don't expect to make money from a news or review site which just regurgitates what others have already reported. You won't get the traffic because the big boys who originated the content will have already got the audience.
Tip #7 Don't write a personal blog because nobody cares and you won't get traffic except maybe from your friends. Celebrities can get away with it because people are interested in the minutiae of their lives but AdSense ads won't be focused if you use only personal content.
Tip #8 If you want to suddenly attract traffic, you need a hook. Make videos using a funny voice or with your dog doing tricks or your cat performing for the camera - that will make people watch your videos and visit your site.
Tip #9 Create your website and populate it with great content before you ever install AdSense; you will already have traffic and you won't be distracted from your main purpose.
Tip #10 Just work at it. Create content regularly which helps people and which they want to read; that's the only way you'll attract traffic to your site and revenue from AdSense
So, I hope these AdSense tips will help you to focus on your content and forget those measly few cents for the time being.