The hardest part for me is to write the first sentence. I will have a lot of topics in my notebook but I don't know what to do with them. However, if I spend enough time thinking about something during the day, before sleeping I get a sentence and pen it down. Once that happens, I make it a point to complete the article the next day. I guess the tip would be to keep thinking about what you want to say and when you do figure it out, capitalize on it!