When decluttering and organizing, keep distractions to a minimum. Commit yourself to small tasks or projects that can be achieved in a short time. Focus in short defined bursts.
Here are a few tools: Use small time blocks such as 15 minute, 30 minute intervals for doing tasks. Even five focused minutes are better than an unfocused hour. Set a timer - you can use your smart phone or computer if you don't have one. Try to be laser focused and do nothing else but this task