Reading definitely helps with writing so start reading something on the subject you'd like to write about. You may choose to go to the library or to read a blog post but the plan is to get you into the headspace so you're thinking about the topic more. Magazines are also good as the articles are short, the pictures are colourful and they feel quite indulgent as many of us no longer buy a newspaper or magazine as we can get so much information online.
See also: Finding Time To Read
"But I'm already thinking about what to write!" I hear you cry but try doing this away from the computer screen. Take a walk to give yourself time and space to think. Sit in the park and just listen to the wind or sit in a cafe and listen to the conversations. Actually, eavesdropping can be great for getting new ideas. Clearly, you shouldn't make this obvious but there are many times you'll hear a conversation without even trying so don't always fight the noise and see if you can gain some insights.
As well as a bit of people watching in the cafe or at the park (but don't get creepy about it) consider watching a TV programme or film to inspire you. Sometimes the dialogue will grab you and sometimes it's the location but well chosen viewing material can help to get you writing again.
Try listening to the right type of music as well as listening to conversations. We're all different so classical music may get your creative juices flowing or it could be hard rock for you. Some writers keep the music in the background while they write and others just need it to get them started. You do what works for you. I prefer to work in silence these days but I don't know any teenagers who ask for silence when studying.
See also: A Noisy Noise Annoys
If you try to write first thing in the morning but know you have a multitude of tasks to do afterwards it adds pressure which is not going to help so don't be afraid to change things around. Try getting up at a different time, doing the shopping on a different day and altering your route to work. A collection of small changes can get you out of a rut and get you looking at the world in a new way.
When writer's block hits don't beat yourself up about it. It happens to everyone. Do you have any good tips to offer too?