When I decided to be a writer, I expected it to be easy and thought the words would fall right on the paper.
I was very wrong about that and found it is very common among many writers.
However, writing is what you make it. If you choose to write for yourself versus other people it may be a lot easier, since you will be your own critic.
For example, writing in a personal journal versus a public online blog will be very different. When you choose to write for other people, writing can become a little difficult.
Why? Because you will then have to put time into researching appropriate topics and relevant information.
In addition to that, you'll also have to figure out what will be appealing to your audience. There is a lot that goes into writing just like anything that is done professionally.
Even the most successful writers have a hard time every now and then. Practice makes perfect. The more you write, the easier it will get overtime.