Hey there, Aquib. Mechanical engineers are demanded in so many types of fields like construction , automotive, aerospace and other types of industries.

1. The process starts with the very beginning that whether you have completed your high school or not if not then then you should pay full attention on the subjects like science mathematics and computer science. Your base must be very strong.

2. Develop your hobbies in activities related to mechanical engineering. Like start building models and projects relted to that. you can take help from YouTube there are numerous of projects available.

3. Start using tools and equipments available in your school or home. Also learn how to use them properly, their names, their work, and method of using them properly.

4. Try learning from surrounding . Take the mechanical things weather broken or of no use and try rebuilding them . In the meanwhile keep asking from people about the equipments present in those things.

5. Develop your writing and speaking skills so that you can explain about the machines or your projects properly.

6. Try building new things from the materials and stock available in your house. I must say YouTube is a great platform for learning these things. Make items after watching it from YouTube so that you can learn how things can be used in different ways and try making something new from your own ideas.

6. Read magazines and articles related to mechanical engineering , and develop your interest in them. Keep yourself updated with the latest machine and inventions. 

7. The study portion you will learn from the institute or college where you are going to take admission but the main thing I want to say is that if you are interested in that don't lose hope and be focused. Also don't get distracted from other career options because you can do best in your field.

Is there anything more in which I can help you out? Feel free to mention. All the best.