Are you procrastinating very often ?, if so, stop it immediately. Be organized. Get rid of those cluttered memos, post-it-notes, to do list etc from your desk. make your desk clean and neat, so you will concentrate even better for working.
All you need is a Personal Information Manager or PIM. A software that manage your contacts, to do list, calendar events etc. There is a lot of software that can be used for your personal information manager. Microsoft products for this need is Microsoft Outlook. However I wont talk about Microsoft Outlook here. I offer you the alternate one.
Microsoft Oulook is proprietary software, it is a contacts manager, a mail client, a calendar and more and it is expensive one, but it offer various capabilities. However, you also could find those capabilities on other software. Few of them are :