Not every useful skill needs months of training. According to Forbes, there are at least seven practical capabilities you can pick up in 30 days or less to give your career a sharp lift. 

• First on the list is basic Microsoft Excel and data-analysis proficiency — knowing how to create pivot tables, run XLOOKUPs or dashboards can make you valuable even if you’re not in a purely analytical job. 
• Then comes business-style writing: crafting concise, structured emails or reports so your communication becomes clearer and more impactful.
• Public speaking — not just for formal presentations, but for everyday meetings — also makes the cut: with just a bit of practice, you can express ideas with confidence.
• Basic project-management skills are another: even small tasks can benefit from proper planning, timelines, and accountability.
• Improving your LinkedIn profile helps too: a well-written summary and clearly listed skills make you more discoverable to recruiters.
• Also under-rated but potent: negotiation skills — not just for salary talks but everyday work assignments and deadlines. 
• Finally, mastering time-blocking — allocating fixed slots for focused work — can boost productivity, reduce stress, and help you deliver consistent output.