Living in the present while stuck in the Past. Help..?

[chepito]

Each day I live today I try to compare it with my previous self, all my experiences, actions and even thoughts. May be this is the reason I am not able to grow.

In the past was very enthusiastic, always using my brains, high concentration, basically good in studies, very helpful, avoided taking favour from others, other than my family, kept my thoughts to myself(i.e. all my worries so not to trouble others). Though at the same time was highly immature, irritating, under confident, had little friends, confused, hyperactive. Always wanted to be better whenever I saw someone better than me, but relatively content in life.

Now am relatively confident, a bit more mature, have loads of friends, less irritating if not not irritating. But now i feel that enthusiasm gone from my life. Like going to a party or seeing a new thing, earlier i would be very excited to go or to lay my hands on that new item, to explore it. Now i dont feel that enthusiasm. Even, it someone said some work, i was ready to help even before they asked, now i feel to avoid it, just doing it because i think earlier i used to do it and it is good.

Earlier if a set of rules were given, i was too scared to break any rules. So always obidient. But now I dont even remember the rules half the times.

Kept my thoughts too myself but now with friends my thought are spread to many and yet no solution.

Cant concentrate on things. As if my concentration power is gone. So lack of concentration in classes, thus studies suffering, Not only that, at times if someone is saying something to me, i have to ask twice or even thrice and still unable to understand what they are saying to me unlike earlier when i used to pick up things quite fast.

Always aimed at perfection, but now its just to do work to complete it. Futhermore earlier always able to keep track of pending work and as if a memo running in my mind keeping telling me things to do, so felt like something is undone and doing work was top priority. Now, try to delay the work.

So in comparison to past, more clumsier, selfish, vague, etc. So everytime i do anything i keep thinking that i was better in the past. I guess this might be the reason i am not able to grow as a person as well and this fact further frustrates me a lot adding to my list of problems. pls help!!