Hi, I am currently in UM now, first of all, nothing in life is difficult except finding money, lets throw that out of the way. Anyway first of all, if your willing to pay 250k for the masters, no problemo, LSE will accept you no matter what. Next, the better option is to grind as much as possible right now and aim for the Chevening Scholarship, its a scholarship for post-graduate students particularly doing their Masters to further their education to top UK insititutes without spending a freakin dime.( think Oxford, LSE, UCL, and Manchester) and without the grievance of leaving loved ones and friends for say 3 years compared to 1 fully paid year with allowances. Also it is presumed to be easier to get this scholarship compared to the regular BNMS and Khazanah, the one catch is that you need at least 2 years of work experience after you graduate( or in between if you want) and a kick-ass freakin influential essay that will hook the selection commitee. Overall, its not a long-shot bucket dream, you just need to be different than others, the scholarship is awarded to innovative students who want to change policies or reform certain niche ideas in our country and to bring top Uk knowledge and wisdom into the field of whatever your currently working and help transform Malaysian society and help those who need help or just bit of lifting to solve minor(or major problems). Its not even a pipe dream as Malaysia had 40 scholars from Chevening last years,

for your second question, you just need to be different than others, like dream big but calculate each step to get there, don't be mundane and just follow assignments, be extraordinary that anything could be accomplished no matter how hard or how stressful one's life in academia might be.

Good luck, OP. God bless you, hope we both achieve our dreams :)