Ways to lose 40 lbs

The most you could hope to lose is two pounds per week, realistically. If you look at the getting started posts, they have a lot of good information.

Woah, slow down there! 40 lbs in 2.5 months is a LOT! You're talking about losing nearly 29% of your body weight.

You didn't reach 140 in 2 months, I'll bet. Think about how long it took to put that weight on, and aim to take it off in a similar manner. You don't need to deprive yourself or become an exercise fanatic, and small changes will make a big payoff over time. You could go all-in, but most people wind up defeating themselves by severe changes that make them miserable. A better approach is to say "hey, my life is unbalanced right now. I need to bring balance back into it and take care of my body AS WELL AS my mind here."

Tips:
(1) Log everything you eat and be 100% honest about it.
(2) Get some exercise every day. Even 30 minutes of brisk walking can reverse weight-creep. Your school almost certainly has a walking path, a track, and a gym. Use them! Or join a social exercise club. I had a lot of fun, and helped take care of my health, in college by participating in diverse activities like the bellydance club, the ballroom dance club, and theatre! Find what you like, and DO it!

You've learned something about yourself already; you eat to cope. So you should stop in at your university health center and make an appointment with a doctor or nurse practitioner or dietician to discuss your health goals. Then I strongly urge you to take advantage of your school's mental health services. Most schools have excellent counselling available, and all too few students take advantage of it. They can help you work through the way you think about food and stress, and help you find solutions that work for you.

Believe it or not, as a college student you're in an environment with more resources available to you than almost anyone outside has without significant extra costs. They're already included in your student fees, so use them!!

(I apolgize in advance if I sound mean -I'm really hangry) Hahaha, no. There's NO way you'll healthily lose 40 pounds in two months, especially if you're not obese. If you shoot for 0.5-1.5lb a week loss (because 2lbs a week would be inappropriate for your stats and weight loss goals), having a goal of mid-late August would be a lot more appropriate (accounting for weeks where you might not eat at a deficit, slowing down your weight loss as you get smaller, etc).

For comparison, it took me close to two years to lose 40 pounds (170 to 130 for a 5'6 person at a similar age).

In two months the most you can safely lose is 16 pounds. Since you only have 40 to lose you would do better with a 1 pound a week goal or less or 8 pounds.

It might take you longer than you want but you can do it and choosing a safe and reasonable goal is going to make you much more likely to succeed.

40 pounds by August would be a great goal. I think, I will set that one. The great thing about losing slow and steady is that you can learn to do it for life instead of how to yo-yo.

At 5'4" you likely would be underweight at 100 lbs. That may not be a healthy goal no matter how many months it takes you to get there. You say you're in college. You may be unrealistically comparing yourself to some earlier 100 lb version of yourself who was still growing (you may even still be growing).

Forty pounds is totally doable. Many people have lost more.

Forty pounds in two months is unlikely. If you're patient and can wait longer than two months, you will be able to lose however much you need to lose.

Sounds like you made a good revision... From what I've seen in my 100 days here, the people who are in the biggest rush usually just disappear. You've done yourself a big favor by setting a more realistic goal!